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Battery Optimization Discussion Thread
CM9 beta: Android 4.0.3 for Samsung Epic 4G
This thread is ONLY to discuss issues related to power management and battery life on CM9 on the Epic 4G. Battery tips are regularly summarized in the official Battery Optimization Guide. Please read the guide before posting to this thread.
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its good practice to save battery to turn refresh interval for apps that access the web for updates such as social media, new readers, etc to manual to help save battery life as most of these apps refresh on a pretty regular interval and defiantly eat up alot of battery
If you notice especially high battery drain and recently used your GPS or Camera they can occasionally stay on with no visible signs. Also please remember the battery stats is HIGHLY inaccurate. A Phone reboot usually fixes this.
Never keep apps like Skype, IRC, etc that stay running and keep your CPU on they drain battery especially fast!
One big battery saver is to not wake your phone to just check the time. Let the CPU stay in deep-sleep as long as possible to preserve power until you actually need your phone for something.
One MAJOR thing to save power is DO NOT MESS WITH CPU SETTINGS!
Do not use 3rd party apps like Voltage Control or SetCPU or even the built in Performance settings as modifying the settings will increase the minimum clock to 200MHz which will greatly reduce battery life than NOT messing with them. This is a known issue and will be addressed in a future release!
dyehya said:
One MAJOR thing to save power is DO NOT MESS WITH CPU SETTINGS!
Do not use 3rd party apps like Voltage Control or SetCPU or even the built in Performance settings as modifying the settings will increase the minimum clock to 200MHz which will greatly reduce battery life than NOT messing with them. This is a known issue and will be addressed in a future release!
Click to expand...
Click to collapse
If you DO decide to run a custom kernel, (NOT, I repeat NOT recommended or supported by CM9 devs) I'd suggest Control Freak. I ended up with a 200mhz min, and with that app managed to get deep sleep and 100mhz back. WITH uv and some minor oc. My battery life is great.
Head on over to the app thread here: http://forum.xda-developers.com/showthread.php?t=1072403
Another thing that can save battery, Screen Filter from the Market (Play Store now I guess) can dim our screens lower than the lowest stock increment. Useful for dark environments. (Movies, night outside etc.)
This should be obvious, and has been stated already, but it bears repeating: TURN OFF DATA AND ALL OTHER MODEMS if you're not using them.
Thanks to all the devs and everyone who contributes.
YES!!! It seems a little bit more snappy or is it just me?
And thanks for the advice not to run custom kernels...
Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it.
I simply cannot believe the difference. Makes me think I'm gonna have to go out and get Juice Defender, and let it turn off data when I put the phone to sleep, it is just that dramatic.
I can call text, and play hours of games, and still have the battery have more juice remaining than it did over the same timeframe with just a call or two for usage with the data on.
tabormeister said:
Another thing that can save battery, Screen Filter from the Market (Play Store now I guess) can dim our screens lower than the lowest stock increment. Useful for dark environments. (Movies, night outside etc.)
Click to expand...
Click to collapse
Rather than installing an additional app to control brightness, why not just tweak the settings yourself?
System Settings / Display / Automatic Backlight
Check "Use custom" and set a lower Screen dim level. Use "Edit other levels..." to adjust the steps for auto brightness if you use that feature.
This is a fantastic feature if you use the phone in low light conditions.
DCRocks said:
Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it.
I simply cannot believe the difference. Makes me think I'm gonna have to go out and get Juice Defender, and let it turn off data when I put the phone to sleep, it is just that dramatic.
I can call text, and play hours of games, and still have the battery have more juice remaining than it did over the same timeframe with just a call or two for usage with the data on.
Click to expand...
Click to collapse
This first and foremost for me.
I took my phone to a basketball game the other night and turned data off. From when I left work to when I got home was about 7 hours, and I didn't plug in for another few hours later and still had some juice. Compare this to last night when I went to class and had my phone in my pocket with 4g on for a few hours, I arrived home and my phone died 15 minutes later. Total time elapsed, 3 hours 46 minutes.
Particularly 4G data is offensive in it's battery consumption.
I have also found that putting the display on Auto Brightness saps my battery. I just adjust it whenever I need to, keeping it on the lowest setting most of the day since I'm inside a lot.
The mmc_delayed_work and deleted_wake_locks are driving me crazy. I know they've been reported as "false blames," but something, whether MMC or otherwise, definitely causes seemingly unnecessary wake locks, and there is a very clear pattern between high report percentage and battery drain.
I don't mean to take away from the optimizations suggested; they're definitely useful if you're looking to stretch the battery life out longer than typical stock capability. But for many of us, something wakes the phone a little too often, and it's very difficult to debug without disabling every single application and testing one at a time.
I guess the point is, has anyone else found a better way to figure out these wake locks?
Why is awake time in Android OS always more than double the display on time? That sounds like serious wake locks. What can I do to reduce that?
Sent from my SPH-D700 using xda premium
Don't overlook the AudioOut_1 wakelock. Its my number one offender at the moment.
Minimize it by turning off screen selection sounds... System Settings / Sound / Touch sounds.
We need to figure out what the problem is with that.
On the good side, my mmc and deleted wake locks are negligible so far on beta.
Liner81 said:
Don't overlook the AudioOut_1 wakelock. Its my number one offender at the moment.
Minimize it by turning off screen selection sounds... System Settings / Sound / Touch sounds.
We need to figure out what the problem is with that.
On the good side, my mmc and deleted wake locks are negligible so far on beta.
Click to expand...
Click to collapse
Same for me. Think due to notification sounds mostly.
muyoso said:
Same for me. Think due to notification sounds mostly.
Click to expand...
Click to collapse
That's probably right. The only time I ever see that is playing music without headphones. I almost always have my phone on vibrate
Sent from my SPH-D700 using xda premium
I get 39 minutes for vbus_present in the 6 hours since unplugged.
Sent from my SPH-D700 using xda premium
Just want to say THANK YOU for this thread, and THANK YOU for such am awesome rom.
If I might be so bold to suggest, put a section on your page for "If you get worse battery life on this rom than your last rom, it may not be because of a problem with this rom, it may just be that way and there may be nothing that can be done about it because that's just the way it is."
I have had no problems with battery life, fwiw.
Sent from my SPH-D700 using XDA
"Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it."
Agreed... Right now 25%, 8 days 8 hours, 3 h 37 m awake, screen on 1 h 43 m
XXCoder said:
"Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it."
Agreed... Right now 25%, 8 days 8 hours, 3 h 37 m awake, screen on 1 h 43 m
Click to expand...
Click to collapse
8 days? Airplane mode? Or is your battery over 9000....mah?
Sent from my SPH-D700 using xda premium
XXCoder said:
"Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it."
Agreed... Right now 25%, 8 days 8 hours, 3 h 37 m awake, screen on 1 h 43 m
Click to expand...
Click to collapse
Pics or it didn't happen! And here's a battery tip. Don't install facebook or messenger. Ever.
Sent from my SPH-D700 using Tapatalk
Just spend a day with CM9 Beta 0. It's a great rom with lots of promise. Great feel and look, very fast, ICS is fantastic.
That said, the battery life is not there yet. I basically set it up the same way I set up the stock rom. Email on Exchange push notification, EVERYTHING ELSE on manual sync. On a stock rom I usually am at about 40% after 12 hours of moderate use. About 5% drop an hour. On this rom I was at 75% after 2 hours. About 12% an hour. This is with the "stock" 1800 mAh battery.
If the devs can match the battery life of stock GB I'll be back. It really is a great rom, I just can't recharge twice a day, and I'm not carrying around a 3500mAh battery in my pocket either.
Seriously, great work to all the devs who have taken it this far. Looking forward to the next couple releases.
DCRocks said:
Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it.
I simply cannot believe the difference. Makes me think I'm gonna have to go out and get Juice Defender, and let it turn off data when I put the phone to sleep, it is just that dramatic.
I can call text, and play hours of games, and still have the battery have more juice remaining than it did over the same timeframe with just a call or two for usage with the data on.
Click to expand...
Click to collapse
I use JD for this and run it in extreme mode, which disables data until you physically enable it yourself (and after you enable it, it will disable again when the screen is off). Using it, I get a huge improvement in battery life, especially on CM9. It's kind of annoying having to enable it everytime you turn the screen back on, especially since it takes 4-5 seconds before data works again, but if it can give me the type of battery life it does, I am all for it. Other than the slightly noticeable lag I get compared to CM7 and other ROMs such as CleanGB (I know I can install supercharger, but I am talking pure stock CM9 here), I have no problems at all. Major props to all the developers involved for breathing new life into our OG Epics.
It seems that the battery drain on my newest N7 (RMA'd first one) is waay worse than on the other, I'll attach some screen shots of what I mean.. it may be just the WiFi is using a lot more than the other's :S I left it 4 hours alone with WiFi and the battery drained 20+ % which even with WiFi on seems excessive does it not? Is it possible I got one with a faulty WiFi radio? I will be testing tomorrow (or maybe tonight) to see battery drain with WiFi turned off to compare, because it also seemed to drain fast when I was just out and about with WiFi off :/ worried I have bad battery, deep sleep isn't working right (it is going into deep sleep or at least thinks it is from looking at cpuspy), or faulty WiFi... or just too early to judge XD has anyone noticed battery improve over time ? I forget if I did was a month ago I got the original
BTW first screen shot was taken pretty much right as I was leaving for work, so you can compare the battery drain there..
Sent from my Nexus 7 using xda app-developers app
I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.
I'm currently watching the MediaServer app use a disproportionate amount of battery (14% and rising). I deleted a number of images which must of kicked in the scanner which must be very inefficient.
I also noticed my N7 become very slow at the same time.
Possibly you downloaded a large amount of images/music/etc before putting your device to sleep...
Sent from my Nexus 7 using Tapatalk 2
Toast95135 said:
I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.
Click to expand...
Click to collapse
I really wish I could figure out why maps keeps starting a process.. can you check to see how many instances of maps there are ? In particular one running Prefetcherservice.. as for the other comment, media server is sitting at 6%, android is at 14%, and screen at 67%.. though I did copy a bunch of songs and pictures over after the RMA, is there a way to fix these or should I delete them to see if it gets better ?
Sent from my Nexus 7 using xda app-developers app
Sigh, I might just have a bad battery, or preferably poorly calibrated, since another hour of use, just browsing and such, and I'm down 20% more -_- hope I don't have to RMA again
Sent from my Nexus 7 using xda app-developers app
As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/
noneabove said:
As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/
Click to expand...
Click to collapse
Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?
findmike said:
Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?
Click to expand...
Click to collapse
Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha
noneabove said:
Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha
Click to expand...
Click to collapse
Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.
findmike said:
Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.
Click to expand...
Click to collapse
You think the battery life will get much better than what it is? My only other android experience is my HTC Desire Z which has a horrible battery as it is so it didn't improve much at all with custom roms
Speaking of improved life through ROMs and kernels, have you noticed any kernel providing particularly better battery life ? I'm on trinity right now, no voltage changing, but underclocked to 1.1 ghz from 1.3
Factory reset, see if the problem continues. That's the only way decide if it's a HW problem.
And my N7 uses effectively 0% battery in standby, it was off the charger yesterday for 6 hours and when I started playing around it was still at 99%. I turn off wifi on screen off, however.
Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.
If your not using nfc that could save battery?
Sent from my Nexus 7 using XDA Premium HD app
Salty Wagyu said:
Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.
Click to expand...
Click to collapse
^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.
northbridge said:
^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.
Click to expand...
Click to collapse
Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app
noneabove said:
Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
Click to expand...
Click to collapse
Well, left it for an hour on standby with wifi on, 0% drain, let's see how rest of day goes !
northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
Click to expand...
Click to collapse
So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...
Wlan_Rx_wake seems to be the culprit of semi bad battery. Is there a way to prevent the tablet from waking up all the time? Maybe just unsync or turn off WiFi instead?
noneabove said:
So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...
Click to expand...
Click to collapse
When my battery drain was bad I had something like 250+ wakeups from maps under the alarms section in only a few hours off the charger and Maps was showing up as the most common reason for partial wakelocks.
I think AudioOut_2 is normal - Im not sure what it does though. Im now at 8+ hours of standby with 99% battery. Under alarms im showing 138 Maps wakeups and 76 from google quick search box. My drain is all gone now though so i assume this is within normal range. The better battery stats thread and a few other threads on XDA have detailed descriptions of the different battery draining wakelocks and possible remedies. Not all wakelocks are bad though.
Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!
If your saying you left the screen on over night, meaning the phone never went into deep sleep.. If you slept for let's say 6 hours and the phones screen was on for that whole time it's normal that it went down to sixty percent battery.
Maybe I'm understanding your post wrong? Btw I cannot see the picture you posted.
Sent from my SGH-T999 using xda app-developers app
Turn off mobile data and lower the screen brightness to 0 during the day. Also disable WiFi when you're sleeping. I also make sure all apps are closed using the app manager button on the far right.
Mine's been fine following this logic.
Oh sorry, I should meant sleeping overnight, whilst I slept cosily in my bed.
I'll reattach the image in a second
Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.
atw1927 said:
Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.
Click to expand...
Click to collapse
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?
Crisisx1 said:
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?
Click to expand...
Click to collapse
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2
joshnichols189 said:
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.
atw1927 said:
Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!
Click to expand...
Click to collapse
Actually No the "Screen" should not always be at the top of the stat list. If you use the phone more than it idles, then yes... but if you are like me, mine says "Phone Idle: 20%" (which is on top) and "Screen" is 4th on the list with 12% (Wi-Fi and Cell standby above it) [this is my personal phone, and I mostly use my work phone. hence the high Idle & standby]
I was having an issue with my phone running out of battery, with very little usage from it. I mean very little, I might make 2 calls from it each day, and respond to an email now and then. I found that an App was preventing my Screen from going into "Deep Sleep" or even "Sleeping" possibly. So I uninstalled all apps (well I only had like 4 additional apps installed), except for 2 that I need (Google Voice & Drive). Powered off the phone, charged it fully, then powered back on. Its been running on the same charge for 24+hrs now and reads 68% battery remaining.
So check the apps you have installed, some use background data, and might be causing problems...
Crisisx1 said:
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.
Click to expand...
Click to collapse
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2
What else would you like to know?
atw1927 said:
What else would you like to know?
Click to expand...
Click to collapse
A longer battery graph would help a lot. If yuppy want top search XDA there is a free app called better battery stats that will help you diagnose if something is running in the background eating battery or even if your phone I'd properly entering deep sleep.
Sent from my Nexus 4 using Tapatalk 2
Better Battery stats and battery screenshots here
atw1927 said:
Better Battery stats and battery screenshots here
Click to expand...
Click to collapse
See now it is much easier to see that you actually do have a problem and what it is. You have the wakelock problem as you can see from Better Battery Stats which falls under Android OS on the other screen. It also appears that you have somewhat weak signal which could cause the wakelock to drain battery even more. There's not much you can do about that wake lock, some kernels have patches for it but those have their own issues as well.
Sent from my Nexus 4 using Tapatalk 2
Could I just install any kernel on stock android and be OK with it? As I've said I've no idea what's best for me; just something nice and clean that doesn't have issues like this. I live onsite where I work so my WiFi is pretty much on all the time if that helps in anyway whatsoever
I'm gonna let it run down completely tonight and charge it, but I don't expect it to help much.
joshnichols189 said:
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I never told him to install a kernel. The advice I gave is to do a reset then I asked if he was rooted or running a custom rom or kernel because that might of been the problem.
Sent from my SGH-T999 using xda app-developers app
Bump
Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.
atw1927 said:
Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.
Click to expand...
Click to collapse
The battery on the n4 seems horrible.
I'm completely stock I just got my phone yesterday, I charged it to 100% now its at 64% battery with only 47 minutes of screen on time.
on the s3 I would be around 83% with 47 minutes of screen on time.
I'm gonna unlock the boot loader and root soon and try Franco kernel I've been reading good things about it.
Sent from my Nexus 4 using xda app-developers app
The battery life on the stock kernel isn't great because the CPU management isn't optimized well. It ramps up the CPU (frequency, number of active cores...) very easily and keeps it there long, which removes the occasional lag but sucks more battery. Flashing a more battery friendly kernel would definitely help you if that is the root of your battery issues and not a badly coded app.
Franco's kernel is a very popular one, and very battery friendly compared to stock (and that doesn't mean you lose performance). It is the one I'm currently using. Most people report of screen on times of 4 or 5 hours. With not so heavy usage and wifi (not 3g) I can also pass 5 hrs.
To install a kernel you need to unlock your boot loader and install a custom recovery. No need to root, but.. why not since you're at it
You can try different kernels with the stock ROM. You don't necessarily need a custom ROM. Just be careful to read the dev's OP and instructions, and definitely not to flash a kernel for another device.
Also another thing that reduces battery is your mobile data, if there are a lot of programs that sync on the background. You can use a program that turns off your mobile data when your screen is off and switch it back on just for a sync every xx minutes. Juice Defender is such app, though I like to use Tasker for that. If you use Tasker and are interested in that project, ask or send me a pm. It works great.
Ive been using an iphone 5 and Optimus G Pro for the past 8 months waiting for the new androids to come out this fall and I am quite disappointed. I have the ATT version, i have wifi, gps, bluetooth all off, never had to do that on the iphone. I close out all the apps and clear the ram, and I went through 30% overnight while I was sleeping. My Optimus G Pro was far better on battery and that seems kinda backwards?
Is there like a break in period or something, what is the deal here
rodimus_prime said:
Ive been using an iphone 5 and Optimus G Pro for the past 8 months waiting for the new androids to come out this fall and I am quite disappointed. I have the ATT version, i have wifi, gps, bluetooth all off, never had to do that on the iphone. I close out all the apps and clear the ram, and I went through 30% overnight while I was sleeping. My Optimus G Pro was far better on battery and that seems kinda backwards?
Is there like a break in period or something, what is the deal here
Click to expand...
Click to collapse
You have a wakelock my friend, use an app like better battery stats or gsam battery monitor, wakelock detector etc.
Sent from my VS980 4G using Tapatalk 4
---------- Post added at 11:32 PM ---------- Previous post was at 11:31 PM ----------
I have 3 hrs screen on time and barely went through 30%
Sent from my VS980 4G using Tapatalk 4
so how do i fix this wakelock thing
rodimus_prime said:
so how do i fix this wakelock thing
Click to expand...
Click to collapse
You have to figure out what application is causing the "wake lock"
What a wake lock is; Its something running in the background that is not letting the phone "sleep" or otherwise go idle. Meaning your phone is running full speed ahead while you are sleeping.
It could be all sorts of things causing a wake-lock. I had one guy on my ROM have a wakelock because his internet connection was so poor the phone just kept searching and he was draining about what you are draining everynight.
Another thing I would look at are your location settings, not just GPS. The new Google settings Icon has a bunch of crap that it syncs and tracks you via all sorts of stuff. Go in there and make sure nothing is turned on you dont need...
And lastly, like the other guy said, check for a battery stat app. They can show you what app is not sleeping or why your phone is not sleeping like it should.
Facebook is a notorious offender. With refresh off I would get over 140 wakelocks in a 7 hour period.
Sent from my VS980 4G using xda app-developers app
truckroot said:
Facebook is a notorious offender. With refresh off I would get over 140 wakelocks in a 7 hour period.
Sent from my VS980 4G using xda app-developers app
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I was experiencing terrible battery as well. I disabled the haptic feedback with the keyboard and also google now. My battery life seems to be pretty well now. Also disabled leaving wifi on while sleep and off charger.
bova80 said:
I was experiencing terrible battery as well. I disabled the haptic feedback with the keyboard and also google now. My battery life seems to be pretty well now. Also disabled leaving wifi on while sleep and off charger.
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Was your haptic feedback really strong on the keyboard?
Sent from my VS980 4G using Tapatalk 4
heffzilla said:
Was your haptic feedback really strong on the keyboard?
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yeah, I could turn it down for for other things, but couldn't figure out how to turn it down for the keyboard.
Same here
Sent from my VS980 4G using Tapatalk 4
The battery is awesome on mine, way better than the S4 and Note 2. I'm at 100% still and it's been off the charger for 2.5 hours, where my S4 is at 91%.
geoff5093 said:
The battery is awesome on mine, way better than the S4 and Note 2. I'm at 100% still and it's been off the charger for 2.5 hours, where my S4 is at 91%.
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mine is way better now, after being off the charger for 3 hours I'm at 94% where as yesterday I was probably at like 70% at this point.
Don't forget most android handsets need a 72 hour battery calibration window before you will see a more even battery level. After 72 hours your phone should have a good batch of data to help gauge its power levels.
Battery is fantastic on this phone. Coming from an X and Note 2.
I'm still on my 2nd full charge but notice once the phone huta around 60% the percentage drop starts to slow down, I figure this is just calibration getting dialed in and so far I'm very happy with battery life.
fd toggle
Hi there, I am not sure if this is the reason but I used to have Fast dormancy toggle apk on my old lgog to prevent the phone from complete discharge even though I was not actively using the devicd. I installed the fd toggle here,too and I can honestly say that if I am charged 100 % at about midnight, I have the same 100 at about 6:30 when I get up. Of course, no data,no sync,no wifi and no active use of any kind during that time. I do not know if the app is the key but the result is pretty impressive. I have the korean version F320K.
I was using the Snapdragon Battery app on my DNA. Never sure if it did anything. Is it worth using on the G2 as well? Love the phone! Less gimmicky than the S4 and more interesting than the Maxx.
scrosler said:
You have to figure out what application is causing the "wake lock"
What a wake lock is; Its something running in the background that is not letting the phone "sleep" or otherwise go idle. Meaning your phone is running full speed ahead while you are sleeping.
It could be all sorts of things causing a wake-lock. I had one guy on my ROM have a wakelock because his internet connection was so poor the phone just kept searching and he was draining about what you are draining everynight.
Another thing I would look at are your location settings, not just GPS. The new Google settings Icon has a bunch of crap that it syncs and tracks you via all sorts of stuff. Go in there and make sure nothing is turned on you dont need...
And lastly, like the other guy said, check for a battery stat app. They can show you what app is not sleeping or why your phone is not sleeping like it should.
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Scross tell me you got a G2 lol
Sent from my LG-D800 using XDA Premium 4 mobile app
This is dumb. My G2 was at 100% battery for 3 hours! You either have a lemon or your cell reception is poor where you are. The battery life is not horrible.
Yeah, I'm with the rest. I'm coming from a MAXX HD (insane battery) and the battery optimization on the G2 is far superior (albeit smaller battery).
Bought the phone over 24 hours ago and I am still on the charge from the box. Its running great for me with LTE on.
I've upgraded from a Gingerbread recently and now I have the S4 mini. The battery usage after deleting, freezing and "greenifying" apps is bugging compared to my experience. Is there something that can be done? I don't like powering off the phone when I go to bed since the alarm won't work and f charging overnight, too green for that.
Just realized I posted this in the wrong forum, if a mod could please move this to the S4 Mini forum
You_KS said:
I've upgraded from a Gingerbread recently and now I have the S4 mini. The battery usage after deleting, freezing and "greenifying" apps is bugging compared to my experience. Is there something that can be done? I don't like powering off the phone when I go to bed since the alarm won't work and f charging overnight, too green for that.
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what do u mean by bugging?
btw try better battery stats .. It is alot powerful than stock battery stats...
Sent from my GT-I9500 using Tapatalk
I mean that it bothers me.
And I've tried that and really, I don't notice any bad wakelocks, everything looks normal yet the battery won't go 24 hours
Anyone?
The big gap where there is no mobile signal was this on airplane more or something?
Sent from my GT-I9505G using Tapatalk
Same here
I also have low battery usage in omega v21.1. I always have 4G or WiFi on, and don't use it that much while at work, only whats app, some web browsing and PDF and autosync for mails and any do however I get to the end of the afternoon without battery. I've tried different batteries, greenify and intelli3g but nothing seems to help and this has happened with other roms too.
nikzDHD said:
The big gap where there is no mobile signal was this on airplane more or something?
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Yes! I use to put the phone on airplane mode when I go to bed.
Has anyone gotten to save more power on airplane mode?