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My test & results regarding the 60mA standby high battery drain in Android -PLS READ
Hi all. This is a continuation to the thread here but as that thread is full of theories and speculation I figure I'd start a new thread with 'real world' results when it comes to this battery drain issue in Android.
I've been trying hard this weekend to replicate that's been causing the seemingly spontaneous leaps to high battery drain in standby.
I can confirm, at least on my end (UK HD2, WM6.5 CleanEx, Android Darkstone SuperRAM 1.5) that enabling airplane mode in WM before booting android DOES NOT stop the high battery drain.
It seems, at least right now, that the battery drain in indeed caused by the GPS module either being or having been active in Android.
This morning I was having regular 5-9mA drain in standby. I enabled GPS on the way to work, took the phone off the charger and BAM... 60mA in standby thereafter (long after closing all GPS-enabled apps).
Rather than rebooting or anything like that, I plain disabled the GPS module via the Power Control widget (you can add it to part of your homescreen). Switched backlight off and on again a few seconds later... 5-9mA drain (and this is with WiFi enabled)
Here's a test I've just done.
Conditions:
- Loaded DarkStone's Froyo SuperRAM 1.5.
- WiFi, Data, Sync, Auto-brightness, 3G+2G enabled. Bluetooth isn't enabled.
- I won't be rebooting, using task managers or anything like that in between tests as I want to find a 'practical' solution to this issue until a fix is found. Rebooting, waiting for a GPS lock, etc every time you wish to put your phone in your pocket isn't practical.
- If I report ~5mA this is just what's being said by CurrentWidget. It may spike a few seconds later but we can, I think, safely assume that there is a major difference between ~5-30mA readings and ~59-90mA readings.
Results:
1. ~5mA to ~10mA in standby since disabling GPS in Power Controls.
2. Enabled GPS control again and we're up to ~59mA to ~90mA in standby.
3. Kept GPS control enabled but disabled "Use wireless networks" in Data and Security - ~59mA in standby (NOTHING LOWER!).
4. Disabled GPS from Power Control widget again and we're back down to ~9mA
5. Kept GPS disabled but enabled "Use wireless networks" in Data and Security, then opened Google Maps to get my location based on cell tower. Switched screen off. ~10mA in standby.
6. Enabled GPS again - ~60mA in standby
7. Disabled GPS again - ~9mA
Conclusion:
There seems to be a serious problem with the GPS module/driver/whatever under Android when it comes to power management!
SO - it seems, at least for me, that the only solution to this issue right now is to disable GPS altogether and renable it when I want to use a GPS-based application. This isn't great as these wonderful devices are heavily built around being able to keep track of your and friends locations, movements and all other GPS-orientated tasks.
So +1 for an urgent call out to the devs to took further into this issue! Please everyone keep posting your results as this is the biggest, if not only, thing keeping me and I'm sure others from saying Android is perfect for the HD2!
On another note - I also find that the battery discharges when GPS is enabled (e.g. running Google Navigation or Sygic Aura) even whilst plugged in to my car's 12v port via USB adapter. This isn't *always* the case, but it ALWAYS can only 'trickle charge' at best... i.e. An hour on the road using GMaps/Aura will, at best, have around 7% put back into the battery. Under WM with TomTom active the phone would have charged/held its charge quickly. This makes using Android on the HD2 for long trips pointless.
Hope these results help weed out this issue that's been driving me and many others insane for a long time!!
I'd like to elaborate on my last point a little more. The stuff about the battery drain / lack of fast charge in the car with GPS enabled.
I disabled GPS and plugged the HD2 into my 12v, it charged pretty quick. As soon as I enabled GPS and ran for example Google Navigation it would either lose %s despite being plugged in or just *barely* charge after being plugged in for a while.
Remember I have no problem charging and holding charge in WM with GPS active. I had a similar problem with my HTC Hermes in-car years ago.
So this again points to the GPS chip or driver putting excessive strain on the battery, under Android.
Who else has been using Android for Navigation in their car and noticed this?
I will switch radios but I've been though probably half a dozen radios since Android came to the HD2 and experienced this problem with all of them!
SMS92 said:
I'd like to elaborate on my last point a little more. The stuff about the battery drain / lack of fast charge in the car with GPS enabled.
I disabled GPS and plugged the HD2 into my 12v, it charged pretty quick. As soon as I enabled GPS and ran for example Google Navigation it would either lose %s despite being plugged in or just *barely* charge after being plugged in for a while.
Remember I have no problem charging and holding charge in WM with GPS active. I had a similar problem with my HTC Hermes in-car years ago.
So this again points to the GPS chip or driver putting excessive strain on the battery, under Android.
Who else has been using Android for Navigation in their car and noticed this?
I will switch radios but I've been though probably half a dozen radios since Android came to the HD2 and experienced this problem with all of them!
Click to expand...
Click to collapse
check your hd2 if it is charging as USB (charge only) or as a regular charger. That happened to me when I used the wrong cable for the charger.
You should definitely try recalibrating your battery, and as jose mentioned, if you're using a charger\cable that isn't meant for your device it will slowly damage your battery.. so I would recalibrate and wipe batt stats. Also, using EBL set to 3 sec helps a lot and using SetCPU with correct profile settings.. the list goes on man, the quicker you boot from winmo to android the better. (switching to nand might be a good decision as well if your ready to lose WM.. huge difference)
There's quite a few battery threads now.. might want to take a peak
http://forum.xda-developers.com/showpost.php?p=9019755&postcount=29339
http://forum.xda-developers.com/showthread.php?t=734886
http://forum.xda-developers.com/showthread.php?p=8990839#post8990839
http://forum.xda-developers.com/showthread.php?p=10433749#post10433749
http://forum.xda-developers.com/showthread.php?t=881958
http://forum.xda-developers.com/showthread.php?t=827355
http://forum.xda-developers.com/showthread.php?t=819534
http://forum.xda-developers.com/showthread.php?t=825989
http://forum.xda-developers.com/showthread.php?t=796134
http://forum.xda-developers.com/showthread.php?t=749753
http://forum.xda-developers.com/showthread.php?t=737001
That should do it I think..
Scabes24 said:
... if you're using a charger\cable that isn't meant for your device it will slowly damage your battery..
Click to expand...
Click to collapse
Curious about this statement. What would define the wrong cable? Thickness? Aren't all micro usb connections the same?
My HD2, running Dutty FAM V24 ROM, SD card version android built 2.2.1 with Sense. I installed the current widgets which shows i have over 100 mA draining even when my phone is not used. Thank for your information disabling the GPS in Power Control Widget, I now have 6-8 mA during phone standby.
Looks like this make sense having the GPS disabling, compromising some features but having 2 OS in one phone is fairly acceptable. I can just switch back to WM6.5 when I need navigation.
Hello all,
Trying to find some info about some behaviour my Iconia has.
I love my device. Way more capable than my wife's Ipad and all that. There's only one thing that irks me: battery drain while the device is idle.
I also have a B&N Nook 1st gen (for books) and an EVO 4G. I leave and use the Iconia mostly at home, close to the WiFi. I'll take it out for long trips and such, but it stays close. I have it set up so that the WiFi antenna turns off when the screen does. Low brightness on the screen, will only charge the battery when it's low enough to charge, etc. It stills drains close to 6-8% if I leave it alone a couple of hours.
Earlier today I rooted the device and use Bloatware Freeze to freeze some stuff. Eventually I'll get rid of some of the gunk the tablet has installed. I want to figure out how to shorten that gap. It doesn't make a whole lot of sense to me that the tablet left alone consumes 8% of battery charge! I mean, if nothing can be done then so be it, I'll learn to live with it.
For my money I would bet that there is something hidden in the Iconia's OS build that thinks it is a 3G/4G device. Now, I'm wondering what would happen if I were to take the next (logical) step and put another ROM in it. Would this make a difference? If I can make the battery drain stop at 5% or less, that would make this perfect.
Thx!
citizenklaw said:
Hello all,
Trying to find some info about some behaviour my Iconia has.
I love my device. Way more capable than my wife's Ipad and all that. There's only one thing that irks me: battery drain while the device is idle.
I also have a B&N Nook 1st gen (for books) and an EVO 4G. I leave and use the Iconia mostly at home, close to the WiFi. I'll take it out for long trips and such, but it stays close. I have it set up so that the WiFi antenna turns off when the screen does. Low brightness on the screen, will only charge the battery when it's low enough to charge, etc. It stills drains close to 6-8% if I leave it alone a couple of hours.
Earlier today I rooted the device and use Bloatware Freeze to freeze some stuff. Eventually I'll get rid of some of the gunk the tablet has installed. I want to figure out how to shorten that gap. It doesn't make a whole lot of sense to me that the tablet left alone consumes 8% of battery charge! I mean, if nothing can be done then so be it, I'll learn to live with it.
For my money I would bet that there is something hidden in the Iconia's OS build that thinks it is a 3G/4G device. Now, I'm wondering what would happen if I were to take the next (logical) step and put another ROM in it. Would this make a difference? If I can make the battery drain stop at 5% or less, that would make this perfect.
Thx!
Click to expand...
Click to collapse
I leave my device with airplane mode checked, and then re-check wifi (as airplane mode will initially turn off your wifi). I get no strange programs showing up in battery usage now.
Will certainly try...
I'll try this next time I head out. Will leave her in Airplane Mode and will check the battery level when I come back.
I did disable the GPS and all location settings. I do not need it to know where I am, since I have the EVO for that.
citizenklaw said:
I'll try this next time I head out. Will leave her in Airplane Mode and will check the battery level when I come back.
I did disable the GPS and all location settings. I do not need it to know where I am, since I have the EVO for that.
Click to expand...
Click to collapse
Right on, let us know if that helps ya out
Well I'm glad I came across this. I didn't even think about leaving the GPS on and consuming battery. Also, where did you adjust for your wifi to turn off when the screen goes off?
EDIT: Nevermind, I found it.
I am developing an app that uses bluetooth and I noticed that if I leave bt on my tab will go dead in 2 days, if I turn it off it can stay idle for several days before needing a charge. I leave the wifi on all the time.
citizenklaw said:
Hello all,
Trying to find some info about some behaviour my Iconia has.
I love my device. Way more capable than my wife's Ipad and all that. There's only one thing that irks me: battery drain while the device is idle.
I also have a B&N Nook 1st gen (for books) and an EVO 4G. I leave and use the Iconia mostly at home, close to the WiFi. I'll take it out for long trips and such, but it stays close. I have it set up so that the WiFi antenna turns off when the screen does. Low brightness on the screen, will only charge the battery when it's low enough to charge, etc. It stills drains close to 6-8% if I leave it alone a couple of hours.
Earlier today I rooted the device and use Bloatware Freeze to freeze some stuff. Eventually I'll get rid of some of the gunk the tablet has installed. I want to figure out how to shorten that gap. It doesn't make a whole lot of sense to me that the tablet left alone consumes 8% of battery charge! I mean, if nothing can be done then so be it, I'll learn to live with it.
For my money I would bet that there is something hidden in the Iconia's OS build that thinks it is a 3G/4G device. Now, I'm wondering what would happen if I were to take the next (logical) step and put another ROM in it. Would this make a difference? If I can make the battery drain stop at 5% or less, that would make this perfect.
Thx!
Click to expand...
Click to collapse
Wow I don't even have 8% drain with Wifi on all the time. There maybe something else in the mix. Most of my drain is the screen as I set it to auto and in my home it ramps up brightness most of the time. Is it possible you have a rogue app? Have you tested the tablet 'fresh', ie: after a factory reset with 1 google profile set up?
Neoprimal said:
Wow I don't even have 8% drain with Wifi on all the time. There maybe something else in the mix. Most of my drain is the screen as I set it to auto and in my home it ramps up brightness most of the time. Is it possible you have a rogue app? Have you tested the tablet 'fresh', ie: after a factory reset with 1 google profile set up?
Click to expand...
Click to collapse
This is interesting, on 3.01 & 3.1 I've had zero drain with screen off w/up to 16 hrs. Settings : Wi-Fi disconnect policy never when plugged in, location & security use wireless networks on & gps on. Airplane mode , always off. I can't understand why you folks are having these problems. Hope we find out. Oh & by the way that's not charging.
Forgot to mention I use Juice Defender.
Update
Well, after much tweaking I think I'm somewhere where I feel comfortable. As a disclaimer I don't take the Iconia with me on my daily commute. Again I take my EVO and my Nook with me. The tablet spends the entire time I'm out in the office at home, unused.
I disabled all screen animations and I'm using the tablet on the lowest brightness setting.
I disabled the GPS and all location-related settings.
I rooted the tablet and am using Bloat Freeze to freeze/disable some of the Acer 'junk'.
I put the table in Airplane mode before heading out.
Last night when I went to bed I didn't use it (I was reading a very good book and I did not use the tablet to watch any of my shows). So I put it in airplane mode after I played with the new Google Music app (Impressive!). I went to bed around 11:00 and woke up at 5:00. In this span of time, battery went down by 1%.
Used it this morning to tweet, check a couple of websites, email. Was @ 71% at 7:00AM. Came back close to 7:00PM. Battery was at 67%. Right now (8:50 EDT) it's at 1d 19h 55m on battery @ 59% charge. Heavy usage of TweetCaster, TuneIn Radio, Browser, Market, &c.
Mind you, it was not used for close to 8-9 hours or more. If I were to take it with me the consumption would be more, but then I would probably use Airplane mode when it was not in use. Besides, I can't use it at work b/c the wireless is not compatible.
I'll keep doing some research, but I'm comfortable. I accept the fact that it will drain regardless, since the OS is up. The previous consumption was too much, and I think I can live within the 2% - 4% consumption rate. If it can go down to 1%, though, that would be even better.
Any other ideas welcome.
beautiful Widgets comes with a widget to disable/enable wifi like we're all used to on our phones.
I loaded prime 9.3 today because I wanted to try a 3.2 rom (for GPS and sd-card reasons). On that rom I noticed the 3g settings were visible until I added the line "ro.carrier=wifi-only" to build prop. I was able to see cell standby show up in batt usage.
Not sure if you guys knew it or not but under battery usage you can click on the graph to see a graphical depiction of what hardware used the battery when. If GPS was active when it shouldn't have been you'll see it there.
Interesting...
Are you suggesting that the 3g apk is active on the 3.1 image? I posted this question to a developer in Market that has an app that kills this on the Iconia. Maybe that's the other 2% - 4% I can kill.
Prime is a 3.2 rom. You could try adding that line and rebooting though.
To the stock 3.1 image? Interesting. Any instructions?
You'll need an app like root explorer that will let you mount the /system partition as read/writeable. In the /system directory there will be a build.prop file that you can open with a text editor (root explorer has this feature built in). You'll see many "ro.xxx" lines. At the end of the first group you'll just need to add the line "ro.carrier=wifi-only" without the quotes. Save and exit the file. Reboot tablet. On reboot, it will read the values in build.prop.
On the prime 3.2 rom, the settings for mobile networks are visible without that line added to build prop. I was actually seeing cell standby in the battery usage list. I never saw that on the stock rom. I use a toggle button for the wifi to quickly turn it on/off from the home screen and that keeps wifi from using any battery while sleeping..
I really doubt that GPS is the culprit in your case. Did you click on the battery usage graph to see what hardware was using the battery during the period of sleep?
Also remember
The % charge that the system reports is not always a very accurate indication of how much charge your system actually has - what matters is up time and how long you can go between charges.
Airplane mode is your friend - no real need to disable animation (has nothing to do with idle charge) - the only thing I do is enable airplane mode when away from charger and not using my tab - some of the drain you are reporting could be due to your system scanning for open hotspots.
Also remember all it takes is one poorly coded app to totally screw your battery over - as you are rooted, quite easy to check for apps that relaunch themselves even after closed, apps that want to phone home every 60 seconds - etc.
Would highly recommend you take a close look at any non-stock apps that you have installed.
As the title says, does rooting the NST affect the battery life at all?
What about using another e-reader app, say the kindle app, in comparison to the battery usage of the default reader?
And also that crazy NoRefresh app that I saw. What is the affect of the battery life with it enabled?
I can say it running like crazy
The battery went down to 40% for one day uses.
I have many email accounts on the sync though.
GoldenStake said:
As the title says, does rooting the NST affect the battery life at all?
Click to expand...
Click to collapse
I've been running rooted for a few weeks now. I don't think rooting, per se, affects battery life so much as what you do with it.
Out of the box, the NST uses very little power. If you leave wifi off, it will last quite a long time. The minute you start loading up anything that wakes the unit up, or that turns on and uses wifi, battery life drops. Since it normally uses so little power, the drop seems quite dramatic.
Here are some rough and very unscientific numbers based on my usage:
Unit off with wifi off: 2% battery consumption per 6 hours.
Unit off with wifi on: 2% battery consumption per hour.
Unit on and in use with wifi on: 4-6% battery consumption per hour.
I haven't really let it sit long enough to really validate these, but they give you an idea. I'd expect to get a week to 10 days out of it with "typical" usage, and probably much more. Part of the problem of bench-marking this thing is how quickly it charges up, even when I only connect for a few minutes to side-load some books.
I use Tasker to turn wifi off unless a very small group of apps are running, and shut it off when they exit.
If you keep anything from polling, don't use active widgets and turn wifi off when not needed, you should get more out of it than most any other device you own. Watch out for things that hang in the background. I was once downloading some files from the Market and it hung, so I lost a lot of power overnight. If you load up with active wallpapers, widgets and/or apps that poll in the background, expect to see it using the battery quickly.
I charge every 4 days, but that's because I use it without wifi unless I am getting an app or something. But that's just me.
In my experience the battery life got worse after initial rooting. It is noticeable. Rooting itself has nothing to do with it.
The biggest offenders are apps installed in the process. I removed most of apps that either worthless for me or attempt using internet frequently. I don't think I need google on a book reader. The reader does not provide any privacy, even password protection. I removed everything related to google. Apps can be sideloaded if necessary.
Free SuperManager is a very good apps for managing the reader but free version tends to use internet too much.
Now the battery life is back to what it supposed to be. Rooting is only useful for me for gaining control and access to the web browser if there are no alternatives. NT is just a reader and a nice one.
My Nook died afer 3 days of intense exploring (wifi on non-stop).
I've spent approx. 6h/day on it.
But it's a pretty nice result IMO.
I think rooting does't really effect battery life by itself. I've checked battery life log on NookTouchTools (an app) and it says 77% was drained by display, but i cant compare it to non rooted version.
I've seen battery drain vary enormously from not dropping at all to dropping precipitously with normal off (not completely powered down) and WiFi shut off. I think that the only really way to get a handle on this is to put a milliampmeter in the battery circuit and measure in real time the current drain.
I do know that if you have the WiFi on you can still ADB to the Nook even when it is "off". You can even start apps!
This is a guide I put together to help you guys identify all the battery draining features and settings that exist on your Note 2014 that rob you of that precious time with your tablets. Many of these features are enabled out of the box by Samsung and this causes people to not get the most out of their batteries. It can be confusing, because many of these settings don't have any explanations and others are just hidden from plain sight. This guide exists to enable you to get the most out of your investment and maintain a long life for your device.
Under the Connections Tab:
Wi-Fi: All you see here is the Wifi connections you have and that the tablet can see. However, hidden under this is an advanced section. Press the Menu button (On the bezel to the left of your home button), then tap "Advanced"
Keep Wi-Fi on during sleep: Make sure this is set to "Always". If this is changed then every time you wake the screen up it will go through the very slow process of connecting to your access point. It's been shown to save a lot of battery to keep this on "Always", not to mention it makes all your internet related activities quicker because you don't have to wait for it to connect. This should be set to "Always" out of the box.
Always allow scanning: Uncheck this. If left checked, then apps and location services will constantly scan and use nearby access points to determine your location. This is done even when your Wifi is off.
Bluetooth: Keep Bluetooth off, unless you're using it. It only takes a quick slide and tap to turn it on from the notification bar, when it's needed. Remember to turn it off when you're done using it.
Location Services:
Access to my location: Turn it off. If and when location services are needed by an app, such as Maps, you will be prompted to turn it on and conveniently taken to the correct settings page to enable this feature. A simple press of the back button will return you to your app, without disturbing anything. It can also be quickly engaged and disengaged in the notification bar. Aside from the fact that advertisers (Yes, Google is an ad company) use this information to track your every move, it's a major drain on battery all for the purpose of selling your location habits to advertisers.
My places: This can be be used to set a place for your "Home" or "Office" so apps and widgets such as your helpful weather app can use this information to show you relevant information, without having to access your GPS. This can also been done through the apps themselves, so check the settings of that individual app if you're not getting the desired effect.
Nearby Devices: Keep this feature off until you want to connect to another device to transfer files or share other content.
Screen Mirroring: Turn screen mirroring off. Screen mirroring is helpful when you want to use your tablet as a second screen, but during the 99% of the time that you're not using it, it's constantly scanning for a device to mirror. (Strangely, this feature once turned off, will turn back on when you leave this portion of the settings. This is possibly a glitch on Samsung's part that may need to be fixed)
Under the Device Tab:
Sound:
Vibration Intensity: The "Vibration Intensity" is used to control the strength of the vibration for haptic feedback or for rarer instances when vibration is needed. Play with this and put it on the lowest setting that you find satisfactory.
Haptic Feedback & Key-tap Vibration: Haptic Feedback & Key-tap Vibration is the small vibration you sense when you touch certain parts of the screen. Most of the time it's used when touching each key on the keyboard as you type. Turning haptic feedback off will increase the longevity of your battery, but it's a satisfying feature to have and won't cause too much drain on your battery. Of course, that all depends on how much you type. If you use your tablet like a type writer, consider turning this feature off.
Under the Controls Tab:
S-Pen:
Turn off pen detection: Check this. This feature exists to accept the use of a secondary stylus. It leaves the WACOM digitizer active and ready to accept inputs from another pen, while your original one is docked. If you have no intention of using a secondary stylus, then make sure this is turned off.
Motions: Used to control the contents of the screen through the gyroscopic sensors of your device. Tilt or pan the device to browse through a series of images or zoom in. Considered to be a gimmicky feature by many, it's also a major drain on battery life. Turn it off and use your tablet with your fingers like the rest of the population.
Palm Motion: Wave your hand in front of the screen and you can do a screen capture or mute/pause the video. Or you can just move your waving hand a few inches closer to the screen and just pause/mute by touching the device! This feature is achieved by activating a sensor on the front of your device that constantly watches for your actions and it's a major drain on battery life. Turn it off!
Smart Screen:
Smart stay: This feature will keep the screen on as long as you're staring at it. Great way to avoid tapping the screen every minute so it doesn't lock itself. But the cost at which it accomplishes this is considerable and doesn't always work right. I recommend you turn it off
Smart Rotation: Uses the mega draining sensor to watch the orientation of your face and adjusts the rotation of the screen. Like the other features it doesn't do it's job all that well at the expense of a lot of battery. Turn it off
Smart Pause: Similar to "Smart stay" but instead it watches your entire head to make sure you're facing the screen. Turn away and it pauses the video you're looking at. Battery drain galore. Off.
Smart Scroll: Watches the tilt of your head to predict when it should scroll up or down. Give me a break. Turn it off.
Under the General Tab:
Accounts: This is a doozy. Your device, if you don't change anything, will constantly, throughout the day, sync your information to the "Cloud." Even when your screen is off and you're not using it, 24/7. Aside from the privacy implications, because anything in the cloud ceases to belong to you under the law. This bleeds your battery on a whole different level because it's always working, at least once an hour, even when your not using your tablet. It's important to note though, that it also enables a considerable amount of convenience, so I will go through each bit of information it syncs and describe it to you so you can pick and choose what's important to you. Just uncheck whatever you don't need.
Google: You may have more than just Google under this section of the settings, but the one thing everyone has is a Google account under here. So tap on "Google" under "My accounts", then tap on your Gmail address, under "Accounts" and let's begin....
Sync App Data: The information you input into your various apps, the changes in each app's settings, or the progress you make can be backed up to Google's servers so when you switch devices and put that app on the another device you will be able to continue from where you left off.
Sync Calender: If you use Google Calender for appointments, reminders, scheduling or just organizing your life then you're going to want everything to stay up to date across all your devices and PC. Add an appointment to your calender while on your way to work, then make sure it appears on your PC and tablet as well. If you don't use Google Calender, then you do not need this.
Sync Contact: Turn this off. You're not on a phone. You're on a tablet. Unnecessary to say the least. However, if you were on a phone this would sync your contacts list and the changes you make to it so when the time comes to upgrade your Nexus 5 to the Nexus 6 your contacts will happily jump ship with you.
Sync Gmail: Uploads and downloads changes to your Gmail account. If you receive an email, it will alert you on your device and that email will be available to view in your Gmail app. If you compose an email on your tablet and save it as a draft it, will appear on your Gmail account when you login on your computer. In other words, it makes sure the things that happen and the changes you make in your Gmail account and Gmail app are synchronized.
Sync Google Photos: Backs up your Google photos to the cloud so you can have them on all your android devices, even future ones. Also, so you can view and have these photos on any device that has access to Google, like a PC.
Sync Play Books: Syncs information such as highlights, annotations, bookmarks and progress from your e-books so you can have those changes across all your devices. Stopped reading Catcher in the Rye on your phone? Just pick up where you left off on your tablet. (This won't effect purchases. Google will be fully aware of what books you have bought and they will be available on all your devices that use this same Google account. This goes for Play Magazines, Play Movies & TV, and Play Music)
Sync Google Play Magazines: Same as the sync for Play Books, except you can continue viewing Miss January's "assets" from another device without interruption.
Sync Google Play Movies & TV: Saves your progress in films and TV shows so you can continue on another device from the exact same spot.
Sync Google Play Music: Favorites & playlists created on your device will be viewable on other devices tied to your Google account.
Sync People details: Kinda confusing isn't it? Especially with Sync Contacts already an option. "People details" is a new sync service related to Google Play Games. It will be used to carry your username across all your games from a centralized location. So you can go and compare high scores and get achievements all from this service. Think of Google Play Games like PSN, Xbox Live or Game Center for your android devices, "Sync People details" will sync your progress, high scores, and achievements so they stay up to date everywhere else.
Sync Picasa Web albums: Picasa is used to organize, edit and share images. This will synchronize the changes you make to your Picasa images.
(I personally only have one of these checked and that's Gmail sync. Everything else is turned off.)
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Practicing Good Recharging Habits
In this short section, I want to share with you good recharging habits to extend the life of your batteries. A common technology most portable modern electronics share is Li-Ion batteries. Li-Ion batteries replaced the older Ni-Cad batteries and did away with a lot of the annoying disadvantages of that older technology, but it's not free of it's own annoyances.
Charge Cycles: Your battery, like everything on this planet, has a life span. For batteries it's measured in charge cycles, or how many times you can fully charge a battery before it can no longer hold a charge. Except, it doesn't just go from holding a full charge one day to being incapable of charging the next, it slowly degrades. The chart below shows you what you can roughly expect:
300 to 500 full charges before your battery can only hold 75% of it's original capacity
1,200 to 1,500 full charges before your battery is down to 50% of it's original capacity
2,000 to 2,500 full charges before your battery is down to 25% of it's original capacity
3,750 to 4,700 full charges before your battery can only hold 10% of it's original capacity.
If your battery lasted 10 hours when you first purchased your device, then 1,200 full charges later it will only be able to last 5. Now, it's important to note that the longevity of you battery depends on more than just charge cycles, heat also plays a role in degrading it. The cooler you battery stays the longer it'll live. Also, I want to clarify that if you were to charge your device from 50% to full, then that doesn't count as a full charge, but only half of one. In other words, if you charge it 10% every single time you plug in your device, then it will take 3,000 - 5,000 of your incremental charges before you're down to 75% of it's original capacity.
Leaving it Plugged In: You have two common ways of hurting the life span of your battery, aside from heat and charge cycles. One of which is to leave it on the charger once it has already hit the 100% mark. Li-Ion batteries don't do well with this. I can understand how difficult it is to remember to unplug your device once it's full, especially if you charge it at night, but leaving it on there isn't good. Take it off whenever you're able to!
Complete Discharge The second most common way of damaging your Li-Ion battery is to let it drain down to 0. Certain safety guards are in place to never allow the battery to actually be fully discharged, even though your tablet won't turn on and it read 0 before it turned off, because if it were to actually be completely discharged then your battery would never be of use to you again. Safety guards in place or not, DON'T let your battery level get too low before plugging it in. This will lower the life span, so make it a habit to charge your device before it gets lower than 30% or so.
The Exception There is, however, an exception to the No Discharge Rule. It is recommended, most famously by Apple, to allow your battery to fully discharge once a month. The reason behind this confusing bit of advice is that your battery has a smart sensor in it that relays the level of charge to your device. By allowing it to discharge completely once a month, it calibrates that sensor to ensure you're getting an accurate reading in your notification bar. I personally think once a month is too often and suspect that this advice may have an ulterior motive behind it, after all replacing batteries outside of warranty is big business for these companies, so I only let it do a full discharge once every 2 or 3 months.
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There you have it. Your Note 2014 guide to longer periods of enjoyment and shorter periods of charging. I hope you guys get a lot out of your device.
Feel free to share your experiences and expertise regarding everything I've written about in here. I'm all ears and look forward to shaping, editing and clarifying this guide to better serve us.
The description of the S-Pen detection is wrong, this has nothing to do with forgetting the S-Pen, the detdction cares shere the S-Pen is in its slot or not. If it is in his slot and the detection is rnabled, the digitizer is disabled thus saving battery. The detection needs to be switched off and thus digitizer always on if a second pen is used while the original is in its slot.
Erstellt mit meinem Note 10.1 2014 LTE
akxak said:
The description of the S-Pen detection is wrong, this has nothing to do with forgetting the S-Pen, the detdction cares shere the S-Pen is in its slot or not. If it is in his slot and the detection is rnabled, the digitizer is disabled thus saving battery. The detection needs to be switched off and thus digitizer always on if a second pen is used while the original is in its slot.
Erstellt mit meinem Note 10.1 2014 LTE
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I just looked into this again and you're absolutely correct. I fixed that portion. I had it confused with the "Pen Keeper" feature from the Note 2 and 3. Thanks akxak.
Thanks for this! Already noticed a significant difference. Should easily last two days with regular mixed use.
Thanks a lot mate. Good tips.
I didn't know it was bad to leave the charger attached once the battery is charged. I assumed the battery electronics would ensure the battery didn't get overcharged.
I leave my laptop plugged most of the time.... Is this bad too then?
Great tips and tweaks. Thanks for the time care and knowledge sharing for us fellow owners. I used most of these.
Sent from my SAMSUNG-SGH-I317 using Tapatalk
jack880 said:
Thanks a lot mate. Good tips.
I didn't know it was bad to leave the charger attached once the battery is charged. I assumed the battery electronics would ensure the battery didn't get overcharged.
I leave my laptop plugged most of the time.... Is this bad too then?
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Yeah they dont overcharge but a battery needs to disharge. I still do leave my laptop on charge all the time and tbh in the last 6 years i have had to replace my battery twice considering I use it a lot atleast 6hours a day i dont think its that bad. At a mere £30 battery replacements from ebay am happy to keep my laptop on charge all the time....however with a tablet i will deffo be careful.
Geordie Affy said:
Yeah they dont overcharge but a battery needs to disharge. I still do leave my laptop on charge all the time and tbh in the last 6 years i have had to replace my battery twice considering I use it a lot atleast 6hours a day i dont think its that bad. At a mere £30 battery replacements from ebay am happy to keep my laptop on charge all the time....however with a tablet i will deffo be careful.
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My laptop has a sealed battery unfortunately. Could probably get it replaced though once the warranty has expired anyway...
Thing is if I keep discharging and charging it all day, a) it'll use up the limited number of charge cycles and b) chances are when I need to take it away somewhere the battery won't be fully charged... It's a samsung and it does have the option to never charge the battery above 80% to prolong its life - maybe I should switch that on...
Wonder why the tablets don't have that option?
jack880 said:
My laptop has a sealed battery unfortunately. Could probably get it replaced though once the warranty has expired anyway...
Thing is if I keep discharging and charging it all day, a) it'll use up the limited number of charge cycles and b) chances are when I need to take it away somewhere the battery won't be fully charged... It's a samsung and it does have the option to never charge the battery above 80% to prolong its life - maybe I should switch that on...
Wonder why the tablets don't have that option?
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Yeah that is unfortunate, these days people use laptops like desktops so battery should never be sealed.
Although surely if the tablet had a 80% charge limit and the plug was left in surely that wouldnt be good for it either. To be honest I think theres soo much factors when it comes to battery life that sometimes I think its too much hardwork haha.
How does the S-pen alarm thing work? I didn't know there was a setting for that. I tested it with leaving the pen in my room and walking out with the note but there was no notification at all.
I have that s-pen detection setting unchecked and it seems like it doesn't even work.
You guys are all welcome. It was my pleasure.
Also, start posting pictures of your battery life and let's compare, see if we can't come up with more minor tweaks. Here's mine from my first rundown with those exact setting applied from my OP. I used it heavily for internet browsing that day.
C2Q said:
How does the S-pen alarm thing work? I didn't know there was a setting for that. I tested it with leaving the pen in my room and walking out with the note but there was no notification at all.
I have that s-pen detection setting unchecked and it seems like it doesn't even work.
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To be honest, I didn't see this feature on the Note 2014. I know my Note II has it and I know the Note III has it. I could be wrong as I'm not near my tablet, so someone else can confirm whether or not this feature is missing. The feature is called Pen Keeper on my Note II.
vdc530 said:
You guys are all welcome. It was my pleasure.
Also, start posting pictures of your battery life and let's compare, see if we can't come up with more minor tweaks. Here's mine from my first rundown with those exact setting applied from my OP. I used it heavily for internet browsing that day.
To be honest, I didn't see this feature on the Note 2014. I know my Note II has it and I know the Note III has it. I could be wrong as I'm not near my tablet, so someone else can confirm whether or not this feature is missing. The feature is called Pen Keeper on my Note II.
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And screen on?
Sent from my SM-P600 using Tapatalk
BooBoo_el_Locco said:
And screen on?
Sent from my SM-P600 using Tapatalk
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Unfortunately, like an idiot, it didn't occur to me take that shot. But, it felt no different than my 4th generation iPad. I'm very happy with this tablet's battery life. Aside from my note 2, this probably has the strongest battery life of any android device I've ever used. Probably twice as strong as the nexus 10.
Yeah, the max i got was 6h screen on
Sent from my SM-P600 using Tapatalk
BooBoo_el_Locco said:
Yeah, the max i got was 6h screen on
Sent from my SM-P600 using Tapatalk
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The maximum you got with these settings was 6 hours? Maximum? I don't know if your exaggerating with your use of the word maximum or have a defective unit? Some people on here and on Android central have these quick draining, slow charging defective units. That screen shot was from my first day with the device I did nothing but use it all day.
Here's my display on time from today from 100% down to 20%.
I'm telling you dude, there's something wrong with yours.
i've been getting about the same (9hrs+) without some of the things mentioned in OP but i keep my screen under 20% for the majority. i've seen some posts where they say to set it at 40 to make it useable, but damn 40% is just too bright for me in normal lighting!
Maybe i need to do a factory reset =/
Sent from my SM-P600 using Tapatalk
---------- Post added at 08:48 PM ---------- Previous post was at 08:39 PM ----------
You get that screen on if you play alot plants vs zombies?
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Yeah I dunno, I thought the battery life was pretty good even without these tweaks. I was playing Trials for an hour or so the other day and it only drained like 3-4%. I've gone about 36 hours without charging it so far and its at around 45% - this is with moderate use and a lot of standby time. I will charge it when it dips below 30% as suggested in the post.
C2Q said:
Yeah I dunno, I thought the battery life was pretty good even without these tweaks. I was playing Trials for an hour or so the other day and it only drained like 3-4%. I've gone about 36 hours without charging it so far and its at around 45% - this is with moderate use and a lot of standby time. I will charge it when it dips below 30% as suggested in the post.
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Can you post some screnshots from your usage?
Sent from my SM-P600 using Tapatalk
Hi all,
Having just bought a Yotaphone 2, latest model 801 processor and with Lollipop installed, I was impressed with it... lovely screen, sharp response, great display on the back ....until I realised that battery life on the EPD or indeed doing nothing was (and is) terrible.
This somewhat negates the point of having the EPD. Because whether you use the EPD or not, as others have found, the processor seems to be spending 100% of the time doing something like trying to connect to Google headquarters to report my unethical swearwords as I look at the battery level heading south.
To try and make sure the phone was using the least power, I went through all the running apps and services and terminated as many as I could, turned off things like Yotafit tracking, turned off the service that sends all your contact details to the Kremlin, and so on... then, I turned on the Yotaenergy mode and despite that, we are at less than 24 hours with virtually no phone usage at all. Fully 50% of all the energy according to the battery stats is being used by Android System and Android OS processes when the system is in standby. And the historic battery screenshot shows that the processor is active 100% of the time., even though the phone has not been touched. (sorry, not attached, I'll post at some point, but its not very interesting)
So, does anyone have any clues about how this can be fixed? I have seen screenshots where people have shown that their processors are not active the whole time, and I imagine they have Lollipop? I have heard Lollipop has got some kind of bug which means that data connections are live the whole time, not sure if this is related.
(This might explain the sudden appearance of half price devices on eBay around six months after launch in the UK.)
Many thanks in advance!
YotaDevices has acknowledged the problems on Lollipop battery life, which is the reason they won't be shipping devices coming to USA preinstalled with Lollipop, but with KitKat. Now that I've played around with the EPD and created some widgets/applications for it, I can spot many places where things can go wrong in maintaining battery life and still keep things working.
Personally I've been lucky with the battery life on all versions of Android. When I updated to the last version of Lollipop (firmware 1.44), the phone did show poor battery life for hours after the installation was finished, before calming down to the promised 5 days stand by. Are you on the very last firmware? (Settings - about phone - build number)
As a last resort if your device won't settle down, I guess you could roll back to Kitkat, which had a very good battery life for pretty much everyone. You can install it with Yota's flasher tool: ftp://fw.ydevices.com/YotaPhone2/YotaPhoneFlasher/yotaphone2_flasher.exe
Just carefully select your own region and then the last version of KitKat (4.4.3) they offer. As you are rolling back from one major version to another, I would suggest flashing pretty much everything. You will lose your data.
Yota has said that they are working on bringing Lollipop 5.1 or 5.2 to Yotaphone 2. Let's hope that that works better.
Thanks that was very useful. The question is, will Yota do another build ... or build another device? I'm hoping the Y2 has a bit of life left in it yet and they do launch in the US - it can only help the development community!
I reset back to factory/Lollipop last night as it was eating battery so fast I could not believe it, and I am on the latest build 1.44EU (and was before). Since then.. it doesn't seem to be misbehaving so much, but it does seem to insist that the WIFI is on (when it is switched 'off' in the settings) by 'on' I mean the battery usage recorder... I wil take your advice and 'take it slow' for now, but may flash back to Kitkat if necessary. It is a bit tedious having to reinstall all your apps by hand but this seems to be the only way to ensure it is relatively clean.
The screengrabs below show the phone doing nothing at all in Yotaenergy mode - per first post.
ridgemagnet said:
Thanks that was very useful. The question is, will Yota do another build ... or build another device? I'm hoping the Y2 has a bit of life left in it yet and they do launch in the US - it can only help the development community!
I reset back to factory/Lollipop last night as it was eating battery so fast I could not believe it, and I am on the latest build 1.44EU (and was before). Since then.. it doesn't seem to be misbehaving so much, but it does seem to insist that the WIFI is on (when it is switched 'off' in the settings) by 'on' I mean the battery usage recorder... I wil take your advice and 'take it slow' for now, but may flash back to Kitkat if necessary. It is a bit tedious having to reinstall all your apps by hand but this seems to be the only way to ensure it is relatively clean.
The screengrabs below show the phone doing nothing at all in Yotaenergy mode - per first post.
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Click to collapse
I am quite confident that they will release updated Lollipop sooner or later. They don't have the resources to piss off all their customers just yet.
Your Wifi still does some scans on its own for Google's location service, even if it's not enabled. You can disable this feature in the advanced wifi settings. But that is not the cause of your battery problem. Basically your device is awake all the time, meaning something is holding a wake lock. And by something I mean one of Yota's EPD compoments, which are counted as part of "Android OS" and "Android System" - your biggest battery hogs. It could be one of the EPD widgets that is misbehaving, or it could be some specific combination of them, or just something out of your control.
You could try removing ALL the widgets from the rear screen from Yotahub, then restart the device, and then let it run for an hour with the screen off. Then check the detailed battery log if the device went to sleep or if it was awake. If it went to sleep, you can try adding widgets back one at a time, and then check again if the device sleeps. Basically all the widgets which update periodically hold a wake lock momentarily (time, battery, calendar, weather etc). Of course if the problem lies on Yota's EPD framework, then this wont help at all.
Jeopardy said:
I am quite confident that they will release updated Lollipop sooner or later. They don't have the resources to piss off all their customers just yet.
Your Wifi still does some scans on its own for Google's location service, even if it's not enabled. You can disable this feature in the advanced wifi settings. But that is not the cause of your battery problem. Basically your device is awake all the time, meaning something is holding a wake lock. And by something I mean one of Yota's EPD compoments, which are counted as part of "Android OS" and "Android System" - your biggest battery hogs. It could be one of the EPD widgets that is misbehaving, or it could be some specific combination of them, or just something out of your control.
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Agreed, I suspect the YotaFit app going bonkers despite my efforts to kill it.... or the Yotagram service, the thing is, looking at the Yota specific apps, you don't really need them, as you can flip the screen with the Yotamirror, and then use any Android app. Sure it would be nice to have notifications on the EPD, but my main focus for this phone is use in bright daylight, and long battery life, not to actually look at the thing 24x7 so I can respond to emails every 30 seconds.
At this point though I'm just trying to determine how bad the underlying hardware is. The GPS on this phone seems to a bit flaky, as does the basic reception of mobile signal. (And I'm not using a metal bumper.) So, I'm happy to flash back to KitKat 4.4.3 to try and give it the best chance..
So, any clues/links about the Yota flash tool? I've put the phone into USB debug mode, installed the flash tool on my windows 7 desktop, and installed ADB/Fastboot as well, but at this point I'm having a bit of an android driver problem, and ADB can't see the phone so that probably explains why the Flashtool says 'waiting for device' when I fire it up. I will go digging to fix that, but I assume that the Flashtool will do all the stuff like putting the phone into bootloader mode, unlock etc...
ridgemagnet said:
Agreed, I suspect the YotaFit app going bonkers despite my efforts to kill it.... or the Yotagram service, the thing is, looking at the Yota specific apps, you don't really need them, as you can flip the screen with the Yotamirror, and then use any Android app. Sure it would be nice to have notifications on the EPD, but my main focus for this phone is use in bright daylight, and long battery life, not to actually look at the thing 24x7 so I can respond to emails every 30 seconds.
At this point though I'm just trying to determine how bad the underlying hardware is. The GPS on this phone seems to a bit flaky, as does the basic reception of mobile signal. (And I'm not using a metal bumper.) So, I'm happy to flash back to KitKat 4.4.3 to try and give it the best chance..
So, any clues/links about the Yota flash tool? I've put the phone into USB debug mode, installed the flash tool on my windows 7 desktop, and installed ADB/Fastboot as well, but at this point I'm having a bit of an android driver problem, and ADB can't see the phone so that probably explains why the Flashtool says 'waiting for device' when I fire it up. I will go digging to fix that, but I assume that the Flashtool will do all the stuff like putting the phone into bootloader mode, unlock etc...
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The widgets I'm running at the moment without any problems are Time, Mini Calendar, weather, battery, and communications (the small widget which shows phone calls, notifications and sms). And of course my own widget.
The best way to make sure there are no useless services running is to root the device and uninstall them completely, but that's another story.
For the flashtool to detect the device, you need to boot it into download mode manually. The easiest way is to turn off your device and plug the usb in while holding volume down -button. The screen will show "download" or something in very small white text. After that the flashtool should find the device. You probably don't have to flash the user partition (it asks for it separately), i.e. the simulated sdcard section which holds all your photos, documents and music.
Edit. And when you have kitkat installed, the first thing you might want to do is to disable automatic system updates. Otherwise it will nag you about the Lollipop update all the time.
I've been facing similar issues and am considering a downgrade when I have the time. I'm really disappointed in yota and won't be buying their next device.
I have found this thread useful, you may too.
http://forum.xda-developers.com/android/general/guide-extreme-battery-life-t3095884
thanks gents, oddly, the advice to let the phone 'calm down' seems to be working. I decided not to revert to KitKat (yet), as every day I use the phone the battery life seems to improve. Yesterday it was down to 40%, today 60% after about a days use. I'm thinking a week of running in will give it time to stabilize. I would love to root the phone but I want to use the Good app, and that doesn't run on rooted phones... (shame but I guess that's the flipside of working for a big corporate for you!)
ridgemagnet said:
thanks gents, oddly, the advice to let the phone 'calm down' seems to be working. I decided not to revert to KitKat (yet), as every day I use the phone the battery life seems to improve. Yesterday it was down to 40%, today 60% after about a days use. I'm thinking a week of running in will give it time to stabilize. I would love to root the phone but I want to use the Good app, and that doesn't run on rooted phones... (shame but I guess that's the flipside of working for a big corporate for you!)
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Try putting the battery widget on your epd. If it shows 5 days remaining when you are above 85% and you don't use the phone, then the device works as advertised.
That Good app sounds like a real killjoy. There seems to exist some Xposed modules to disable the root check, but they seemed to be rather finicky to setup and very easy to mess up.
I was suffering from terrible battery life after the lollipop upgrade and the EPD battery widget was never showing much above 1d anymore. After much research and tinkering, it has now improved and I am seeing greater than 3d again. I think the culprits were maybe google fit tracking which I have now turned off and I also de-installed and re-installed the google play services updates which is a tip I saw in an android forum. I also over the last two days have received several yota widget updates which may have also helped. At least for now I am seeing a comfortable day's use again!
I experienced poor battery life out of blue again. I went through all the settings, cleared dalvik-cache and cache partition, tried disabling everything, but nothing helped. It only showed <1 day battery life at 100%.
But then I went to mess around in the developer settings, and when I set the animation scales from 1x to 0.25x and enabled "Force GPU rendering", the battery life returned instantly to 5 days.
Just thought I'd add this to the list of things to test out if someone's experiencing poor battery life. The forced GPU rendering might have some unexpected effects on some software rendering based games.
dont know if this will help but just seen some of the new features of android m "marshmallow" one of which is doze and there is a separate app available on play store for this. i have installed and it has helped battery life !!!
I was going through terrible battery life after Lollipop as well. Suffered, tinkered, tried various things. Eventually I just said screw it, backed everything up and factory reset it from recovery. Since then it seems like it's almost back to it's old self. Obviously having root and using some kernel control apps, greenify and some other things helps it but It will happily do at least a couple of days with little-normal usage. Still don't think it's as good as KitKat but it's not too far off. The EPD really does help spread battery out too.
I did the same thing but a 3 weeks on, the battery is as shocking as ever.
Today, on battery since 0730, now @ 1115 51% and 3hrs left!??
No obvious apps causing battery drain, just google services!
Rarelyamson said:
I did the same thing but a 3 weeks on, the battery is as shocking as ever.
Today, on battery since 0730, now @ 1115 51% and 3hrs left!??
No obvious apps causing battery drain, just google services!
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Click to collapse
I have had the phone nearly a week, and these are similar figures I experience. What's the point of the epd if my battery dies by lunch!
Sent from my YD201 using Tapatalk
I think it is something with Android 5.0 that is causing the drain issues. I can go anywhere from half a day to a week with good batteyr life and then it will randomly start draining again. Some background activity seems to hold a permanent wakelock and will not let go of it. I am unable to pinpoint what app is creating the wakelock with better battery stats or wakelock detector since there isn't access to kernel wakelocks in either of the apps for our phone. A restart always fixes things though, so I have a tasker script now that lets me know when idle battery drain exceeds a threshold for too long so I know to do a restart, it's not elegant, but my battery life is exponentially better and gives me enough battery life to make it through the day without a recharge and leave the eink screen on all night as a tv remote.
I got a new phone
sportsfan986 said:
I think it is something with Android 5.0 that is causing the drain issues. I can go anywhere from half a day to a week with good batteyr life and then it will randomly start draining again. Some background activity seems to hold a permanent wakelock and will not let go of it. I am unable to pinpoint what app is creating the wakelock with better battery stats or wakelock detector since there isn't access to kernel wakelocks in either of the apps for our phone. A restart always fixes things though, so I have a tasker script now that lets me know when idle battery drain exceeds a threshold for too long so I know to do a restart, it's not elegant, but my battery life is exponentially better and gives me enough battery life to make it through the day without a recharge and leave the eink screen on all night as a tv remote.
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Click to collapse
In the end, I got a new phone after my Yotaphone decided to brick itself. Its a Zopo Speed 7, Octacore, dual SIM, nice screen, and does 4G very well in my part of the world. It is also around $200 at time of writing. Its a Chinese phone typical of the genre, Zopo seem to be moderately responsive to bugs compared with Yota... This Zopa phone is running 5.1 Android and I can tell you that Lollipop is not the problem...
That's after charging the phone and leaving it overnight, with the battery saver mode on... not too shabby. Of course it won't actually last 28 days, but this phone is nothing special and it is capable of running without all those services running that the Yota has.
The Yota spent its entire time when I had it trying to contact Moscow with that dodgy 'dictionary app'. What (honestly) is the point of the e-ink display if it doesn't save power...
If you are experiencing "always awake" and wifi always on despite your settings saying otherwise it may be worth going into your advanced wifi settings and changing "wifi frequency band" from "auto" to "2.4 GHz only. I remember reading this tip somewhere else for an Android 5.0 phone that was having battery issues similar to this. I made this change about 24 hours ago and have noticed a dramatic difference in battery drain when the screen is off. When I look at my battery stats I am no longer seeing a solid bar for both wifi and awake. Worth trying.
For what it's worth, I have had fairly light use today, some checking of emails and facebook, 40 mins or so of music via bluetooth (with screen off). Total screen on time of 35 mins. The phone has been off charge since 06:30 this morning. It is now 17:00 and is showing battery of 71% with an estimated 2d and 8h left. Better battery stats show deep sleep of 71% whereas previously it had shown awake at 100%. Far better than I had before.
stapo101 said:
If you are experiencing "always awake" and wifi always on despite your settings saying otherwise it may be worth going into your advanced wifi settings and changing "wifi frequency band" from "auto" to "2.4 GHz only. I remember reading this tip somewhere else for an Android 5.0 phone that was having battery issues similar to this. I made this change about 24 hours ago and have noticed a dramatic difference in battery drain when the screen is off. When I look at my battery stats I am no longer seeing a solid bar for both wifi and awake. Worth trying.
For what it's worth, I have had fairly light use today, some checking of emails and facebook, 40 mins or so of music via bluetooth (with screen off). Total screen on time of 35 mins. The phone has been off charge since 06:30 this morning. It is now 17:00 and is showing battery of 71% with an estimated 2d and 8h left. Better battery stats show deep sleep of 71% whereas previously it had shown awake at 100%. Far better than I had before.
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Have you tried using the setting so Wifi is only on while screen is on? (Unless on charge...)
I think I found the issue, at least with my phone.
I was syncing with exchange, and there is a nasty bug with android 5.0 and exchange sync. The sync is taking forever and doesn´t sync everything. Calendar and contacts missing.
Then I removed the ActiveSync connection on my phone and set up the app Nine to sync instead.
After that I got much better battery. This may help for others as well. The phone is just hammering the exchange server all the time and this takes up a lot of power.