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Got my LTE upgrade done on my Xoom and now the battery is a joke. I went into settings and disabled the LTE connection, so that now 3g is only used. I also turn wifi on when at home. Currently my Xoom is draining 4ish% per hour while in standby. That means this damn thing won't last a day just sitting there, locked, with no screen on. In Honeycomb 3.0 and 3.1 I could get a days of use with 4-5 hours of screen on time and about 22-26 hours of total unplugged time. Now, under 3.2.2 my battery is totally dead after 18 hours of unplugged time with around 1-1.5 hours of screen use. This is virtually unuseable for taking notes in graduate school after work, when being close to an outlet is impossible.
Any ideas as to what's going on? Tried using Watch Dog and System Panel to see if any apps were going nuts with random CPU usage or RAM usage and everything seems to be in-check in terms of system resource usage. Considering I have 4g totally turned off and wifi enabled when I'm in range of wifi (most of the day) I don't have a clue where this power drain is coming from. Any assistance is highly appreciated given how much I rely on my Xoom for day-to-day use. 3.2.2 seems to have killed it for me.
Please help! Will try any suggestions.
Thanks.
Sent from my Xoom using xda premium
Have you tried disabling mobile data entirely? When I'm in wifi, I disable the cellular connection but haven't performed any in-depth trials on battery life.
"Settings" > "Wireless & networks" > "Mobile networks" > deselect "Data enabled"
Its not just you, mine is the same way it sucks big time. There really isn't anything that I've found to fix it.
I loved how I used to be able more than a day out of a charge...
Anybody have any ideas? Maybe undervolt kernel???
Sent from my Xoom using xda premium
I just received my zoom Lte upgrade and haven't had any battery issues.
PengLord said:
Have you tried disabling mobile data entirely? When I'm in wifi, I disable the cellular connection but haven't performed any in-depth trials on battery life.
"Settings" > "Wireless & networks" > "Mobile networks" > deselect "Data enabled"
Click to expand...
Click to collapse
I haven't but this isn't feasable. I use mobile internet for everything and even take notes and such on Google docs. Even though I'm near wifi for most of a given day, I shouldn't be bothered by manually turning mobile data on and off just to have power- mobile data should be mostly killed when wifi is active. That's how this Xoom worked before. A tablet without internet is nothing more than a paperweight to me. 2 classmates with LTE upgraded Xooms are having identical problems. No fixes found yet. Any other suggestions? This battery life is really, REALLY bad.
Tried going a factory reset and battery life is the same, horrid short, running nothing but stock apps.
Any other suggestions?
Sent from my Xoom using xda premium
wiredup said:
I just received my zoom Lte upgrade and haven't had any battery issues.
Click to expand...
Click to collapse
How long ago did you receive it? The degraded battery seems to have started shortly after the first initial charge after the LTE install.
Sent from my Xoom using xda premium
Same problem here, but I have the mobile network completely turned off and it still does this! Even with the switch to CDMA only!
I will keep reading this thread (only read the about half the posts before posting) so hopefully a solution will show up. But you're not alone in the horrible battery life post LTE upgrade!
I've had my Xoom back since last Wed.
No higher battery drain than previously.
I'm on wifi 90% of the time in home and office.
Yesterday I was all over north San Diego county using 4g. Got home with 60% charge which is about the same as for a prior trip with 3g.
Put your xoom back the way it was. The new hardware sucks the battery a little more. Buy a thunderbolt and then say the xoom battery life sucks. Never charged it during the day before the upgrade. Oh well, that's the price if 4g.
Sent from my ADR6400L using xda premium
Err0xx said:
Got my LTE upgrade done on my Xoom and now the battery is a joke. I went into settings and disabled the LTE connection, so that now 3g is only used. I also turn wifi on when at home. Currently my Xoom is draining 4ish% per hour while in standby. That means this damn thing won't last a day just sitting there, locked, with no screen on. In Honeycomb 3.0 and 3.1 I could get a days of use with 4-5 hours of screen on time and about 22-26 hours of total unplugged time. Now, under 3.2.2 my battery is totally dead after 18 hours of unplugged time with around 1-1.5 hours of screen use. This is virtually unuseable for taking notes in graduate school after work, when being close to an outlet is impossible.
Any ideas as to what's going on? Tried using Watch Dog and System Panel to see if any apps were going nuts with random CPU usage or RAM usage and everything seems to be in-check in terms of system resource usage. Considering I have 4g totally turned off and wifi enabled when I'm in range of wifi (most of the day) I don't have a clue where this power drain is coming from. Any assistance is highly appreciated given how much I rely on my Xoom for day-to-day use. 3.2.2 seems to have killed it for me.
Please help! Will try any suggestions.
Thanks.
Sent from my Xoom using xda premium
Click to expand...
Click to collapse
Download Auto Airplane Mode by DON from the market. It will help BIG TIME!! It does just what the title states, it puts the Xoom into airplane mode automatically as soon as the screen goes off. When you turn the screen back it, the data comes right back in 3 -4 seconds and you're good to go!
Also, you don't have to uncheck any settings or turn 4G off.
Update: Mobile data completely turned off, on wifi only with Xoom sitting about 4 feet from router all morning, so wifi signal was strong. This is the first time I've used the device today. Unplugged at 330am my time, its now 130pm. Device battery is at 60%. 10 hours and 40% of battery gone. That's with mobile data 100% disabled, wifi only- can't even get the Xoom to standby for a full day now. At this current drain rate, it would go from 100% to 0% in one day with no mobile data usage, no screen on time and no usage other than syncing Gmail every 2 hours.
Brother who commented above: Thunderbolt will standby for a full day with no screen on time on wifi only and it has under 1/3 the Xooms battery capacity. I should know- my wife has one and it now outlasts my Xoom. That should not be the case.
From my understanding the Xoom has two 3225ish batteries set up in a sequence. My battery life actually seems to be about half of what it was before. Is it possible that one of the two was disconnected during the LTE radio installation and not properly reconnected? Wasn't sure of the details of how the batteries were set up, but if the Xoom could function with the second battery not working, seems like that would precisely half battery life. Anyone familiar with exactly what had to be done internally to upgrade the radio? Looking at the ifixit teardown of the Xoom, the batteries cover the whole backside- looks impossible to do any internal work on this thing without removing them. Any thoughts?
Cheers,
Landon
Sent from my Xoom using xda premium
Same here. Can't get a full day out of it. Hope a fix will be comming up.
Thunderbolt got the he-man battery and modded my otter box to fit. The xoom battery has entered the battery hog realm after the lte radio. As far as I can tell the radio is cdma/lte together. And it uses power even if wifi is on and data off. It's what I would call big brother watcher. Even if your not connected the radio is txing and rxing something. You know it's lojacked!
Sent from my ADR6400L using xda premium
Interestingly enough, removing the LTE SIM card and using wifi only made no improvement to battery life. I'm assuming the new radio is running at 100% all the time without throttling down, even if absolutely no connection exists or there is a string of faulty battery reinstalls in which only one battery is providing power. That might explain why some people seem to have greater battery issues than others.
Landon
Sent from my Cherryπ 0.8 Atrix. Get yo' slice on.
im glad im not the only one with this problem! its pathetic! im taking my charging cable from my dock with me to work so ill have at least some battery life when i take the train home in the evenings
i to am glad that I'm not alone with this either. I use to charge mine every 4 days with no wifi on and almost no use. Now I get about a day with no use. I mainly use it for web searching and dungeon defenders when I'm home. Horrid battery life for doing nothing. Luckly I mainly only use it at home and am almost always on the dock I got from motor from the upgrade. I use about 4% an hour also with nothing on. Mine is completely stock with no root.
Yahoo mine is stock with absolutely no root or other mods. I guess they knew about the pissy battery life and that's why they gave a free dock. Lol. Still trying to find exactly what's killing the battery. LTE does drain a lot of juice but as I've stated before my wife has a Thunderbolt and per mW of battery power, the thunderbolt is more efficient and that's not saying much. It can standby for over a day with no use fine and it has roughly a little less than 1/3 the Xoom battery capacity. Something isn't right. Its not supposed to be this bad. Anyone filed a complaint/tech request with moto/Verizon? I think its something that we should all do and report what they say here. I have a feeling more and more people are gonna have this issue if they do the upgrade. Maybe if enough of us make some noise, something will be done.
Landon
Sent from my Xoom using xda premium
Maybe it's not the radio.
3.2.2 may have some kind of interaction with something you guys were running that's causing wake locks to get stuck
Did you look at Settings:About Tablet: Battery Use ?
(tap on the histogram at the top for another, see if the time spent awake is solid or different from screen on)
I tested this on mine, with the mobile data disabled and lost about 1% battery every hour, this is on par with the performance I had pre-upgrade.
Rooted, stock kernel
I realize it does not help you but you might look somewhere other than the wireless radio for the problem. I unplugged my upgraded Xoom yesterday morning around 8:30 AM. It is now 8:20 AM and my battery is at 66%. I was on 4G for about 2-3 hours yesterday, the rest of the time on wifi. I check and respond to my mail on the Xoom so it saw some use yesterday, though not as much as I normally do.
I have read little about this issue . Instead of renaming or deleting files can we make auto booting script to kill this process so it will no longer looking for a mobile data ?
I have no android skills so am asking somebody who have it. Maybe there is other safe way to ged ride of that battery eating cell standby process
Proudy owner of iconia
Pawel
PS
I have try
(Without doing nothing 50% SCREEN AND WIFI TOGETHER 40 % after change a charg iconia to 100 % and wiape battery stats)
2g/3g mobile data switching best results cel standby takkes only 35% battery
Kill mobile data and prevent to run almost same thing
Cheat with airplne mode same thing
Try to download from market a.k.a batery saver for acer iconia without any results (thor mod with i have is based on assus transformer and market shows incompatible version?)
Dear Pavel,
this is a rather old issue, solved long time ago. You can just add the following lines in your build.prop file, located in the system folder:
ro.carrier=wifi-only
Thor's ROM features this tweak by default so you don't have to do anything - no cell standby.
Well thor rom have this line indeed. And when U check settings about tablet battery indeed isnot showing .
When U install any other app to show battery stats actually shows cell standby and phone idle. I using norton utilities but few other ones shows.
I left for a night tablet screen off, gps off , wi fi on, airplanemode on and after 6h i have 15 % drop down. 8 H on my iconia possible when everithing is off.
Ps
Writing this post 3% down... and tablet was bought on black friday is brand new is that normal ?
Sent from my EPAD using xda premium
If your tablet is new did you fully charge and then discharge the battery to about where it auto shuts off.
Sent from my Nexus S 4G using Tapatalk
pawel_podgorski said:
Well thor rom have this line indeed. And when U check settings about tablet battery indeed isnot showing .
When U install any other app to show battery stats actually shows cell standby and phone idle. I using norton utilities but few other ones shows.
I left for a night tablet screen off, gps off , wi fi on, airplanemode on and after 6h i have 15 % drop down. 8 H on my iconia possible when everithing is off.
Ps
Writing this post 3% down... and tablet was bought on black friday is brand new is that normal ?
Sent from my EPAD using xda premium
Click to expand...
Click to collapse
There are a couple of things to mention. If you are running an over clocked processor, this will of course use more battery power. Especially with thors roms, because the last time I looked, depending on version, it installed over clocked to 1.5ghz. If you don't need that much, try setting it to 1.2 for example.
Apps that are always running and synching. Things like weather apps, mail, fb, etc. And... those lovely battery apps (a waste of time). And this also includes Norton, as it runs as a process. All of these use battery power.
And as briandigital said, let the battery get a few full changes. Usually takes them about a week to settle down.
I agree with U. Those apps using battery. For example weather widget 0.5 % or norton 0.5 % but still shows 60 + % cell standby or 2% phone idle. wifi over night 30 % with checking mail every 15 min.
Over Clocking got nothing to do with this (1000 on screen on 400 on off) system proces phone is running all the time draining battery.
I have thor 14.2 mod and to get 100 % shure I flash again kernel and dubble chec for wifi-only line.
Wipe battery stats and 10 min after cell stanby 30 % after 30 back to 63 %
Or 5 diffrent apps from market are wrong showing cell standby and system process phone working and draining battery or this all solutins are not really working. If it not showing on /settings /battery is not mean process is not working
Anybody know how to kill that process and prevent to run ?
so can write small script to kill it"
Sent from my HTC Vision using xda premium
I'll ask you a silly question.
And only because I didn't see it stated anywhere (or I missed it)
Are you running an A500? or an A501?
3g USB Dongle?
Did you run any "update patches" concerning 3g Dongle support?
Reason I ask, is that I did some of the testing for the kernel version you are using. (3.9r3). And frankly, I haven't heard a lot of 500 users complain about "cell standby" with the 14Rom. In fact the combo should be giving you extremely good battery life.
You said it only shows cell standby when using some other different application? I might suggest the app is not telling the truth.
Typically, losing 10% overnight with wifi on, is pretty normal. During testing, I lost 8% on internal 3g, and about 10 or 11 with Wifi. FB and Mail not's set to 1hr intervals. WX at 3hrs.
The fact you still have the menu system for mobile networks (2g/3g) is very puzzling......
Did you post this issue on Thor's site? www.tegraowners.com
Moscow Desire said:
I'll ask you a silly question.
And only because I didn't see it stated anywhere (or I missed it)
Are you running an A500? or an A501?
3g USB Dongle?
Did you run any "update patches" concerning 3g Dongle support?
Reason I ask, is that I did some of the testing for the kernel version you are using. (3.9r3). And frankly, I haven't heard a lot of 500 users complain about "cell standby" with the 14Rom. In fact the combo should be giving you extremely good battery life.
You said it only shows cell standby when using some other different application? I might suggest the app is not telling the truth.
Typically, losing 10% overnight with wifi on, is pretty normal. During testing, I lost 8% on internal 3g, and about 10 or 11 with Wifi. FB and Mail not's set to 1hr intervals. WX at 3hrs.
The fact you still have the menu system for mobile networks (2g/3g) is very puzzling......
Did you post this issue on Thor's site? www.tegraowners.com
Click to expand...
Click to collapse
Ok from begin
1. A500 wifi only 16 Gb ver, staples for 299
2. No any addons clear tablet nothing plugin, kernel and rom from thor14v2
3. No any updadtes
4. Am not complaining about battery life, am complaining about stupid process what is draning my battery.
5. A can post 5 screenshoots of different apps whitch showing cell standby process draining battery. Whatever i will download from market kit is showing same so i believe they're not wrong.
6. Never post that to thor forum. Here is way more chances to get respond
Sent from my EPAD using xda premium
pawel_podgorski said:
6. Never post that to thor forum. Here is way more chances to get respond
Click to expand...
Click to collapse
You should re-think about posting on Thor's site. He's typically pretty responsive. Unless it's a stupid question, or somebody's not nice.
The cell standby issue is an old one. It's because the 500 and 501 share the same hardware with the exception of internal 3g for the 501. And because of that, the share mostly the same OS code.
Thors rom, was based on the asus transformer. I don't run it, as it doesnt fully support internal 3g.
It's possible, that the process is still running, only hidden from view based on the images you supplied with the modified build.prop set to wifi-only.
In this case, I would ask you again, to post the issue on Thors FORUM under the Rom ver 14 topic. It may take him a day to answer, as he's working on ICS right now.
In the meantime, here at xda in the a500 forum, there are several "older" topics covering cell standby on the a500. One of the fixes at the time, was to "freeze" the telephoney.apk (get some error messages) then reboot.
Just do a search for cell standby, and you'll find them. I found them earlier today through Google (but can't remember where), so you should be able to do the same.
Well I did some research before I bother U and other solutions is to rename / remove phone.apk witch may solid brick my acer. Am wonder if I rename it and hard reset can I be able go to recovery ? And restore prev backup or this is gonna be a perm brick
Sent from my HTC Vision using xda premium
Well Pavil, those posts are a little old.
And, sometimes people call things a "brick" when they really don't know what a brick is
BEFORE I would rename any apps, I would try this, Install Titanium backup. Once installed, and root granted of course, Select the telephony apk, then do a "freeze" on it. Reboot and check things. You may want to freeze those other couple apk's if it doesn't fix it. You will probably get some error messages when you first freeze it, but ignore it, and reboot.
But BEFORE you go freezing things, do a recovery backup first This way, you can get back to where you were before freezing.
Then see how things go.
EDIT. Stop using battery apps designed for phones. They may run on Honeycomb, but if they were designed for devices that have a functioning radio, they know no better than to display an erronous stat.
But honestly, battery stats in android are somewhat misinterpreted.
Example. If your device used 10% power. And the stat says Display used 80%, It means that of that 10%, the display was responsible for 80% of it. Not 80% total battery power.
In the meantime, I see you didn't post on thors site? Ok, I'm on good terms with him, so I'll pose the question to him.
Thanks for interesting of my problem. I try today to ps ,get pid and kill but this buster is restarting by it self...
Well i will wait for re ftom Thor and ICS. We will see...
Sent from my EPAD using xda premium
pawel_podgorski said:
Well I did some research before I bother U and other solutions is to rename / remove phone.apk witch may solid brick my acer. Am wonder if I rename it and hard reset can I be able go to recovery ? And restore prev backup or this is gonna be a perm brick
Sent from my HTC Vision using xda premium
Click to expand...
Click to collapse
It appears from your screen shots that you don't have your wifi set to disconnect when your screen goes off. I could be mistaken, but if it's not, changing that will help battery life immensely
pawel_podgorski said:
Thanks for interesting of my problem. I try today to ps ,get pid and kill but this buster is restarting by it self...
Well i will wait for re ftom Thor and ICS. We will see...
Sent from my EPAD using xda premium
Click to expand...
Click to collapse
Yeah, no sense in messing things up. A pity I don't have an a500 or I'd test it myself.
You could try flashing one of the other roms, and see if the result is the same. For example Taboonay. I ran it for quite awhile with Thors 3.9r3 kernel. Or you can use the kernel it comes with.
Answer from Thor is that he's not aware of the cell.standby issue as nobody else has mentioned it, and all his stuff now is set up for ICS, so he doesn't have the time to check it out.
So, maybe you just have to live with it. Seems your battery life is ok, so I would just ignore it for now.
Did you wipe your battery stats from CWM before flashing?... And by the way thor's ROM has CPU clock set to 1.2 GHz by default.
p. s. Moscow Desire is right about apps made for phones.
drkalo said:
Did you wipe your battery stats from CWM before flashing?... And by the way thor's ROM has CPU clock set to 1.2 GHz by default.
p. s. Moscow Desire is right about apps made for phones.
Click to expand...
Click to collapse
Yeah, he had to back off the original cpu install recently due to a couple users couldn't flash at that speed (1.5). Not all CPU's are made equal.
(the real issue here, is the old "cell standby" issue that a500's had in the past)
But again, like drkalo affirms, you shouldn't be using battery apps that were designed for phones running android 2.3. I suspect (considering nobody else using Thors roms complain about cell standby), that the phone battery apps have this hard coded, and expect it to be there, so it displays a random percentage. Probably because it see's the phone apk's in the OS and naturally assumes it needs to display something.
Yes, the apps will mostly function on Honeycomb, but, are they really made for tablets? Probably not. (even if they say it does).
Moscow Desire said:
Yeah, he had to back off the original cpu install recently due to a couple users couldn't flash at that speed (1.5). Not all CPU's are made equal.
(the real issue here, is the old "cell standby" issue that a500's had in the past)
But again, like drkalo affirms, you shouldn't be using battery apps that were designed for phones running android 2.3. I suspect (considering nobody else using Thors roms complain about cell standby), that the phone battery apps have this hard coded, and expect it to be there, so it displays a random percentage. Probably because it see's the phone apk's in the OS and naturally assumes it needs to display something.
Yes, the apps will mostly function on Honeycomb, but, are they really made for tablets? Probably not. (even if they say it does).
Click to expand...
Click to collapse
So what to use to check ral battery / process usage?
Sent from my EPAD using xda premium
Personally Pavil, I do not use one. Except what comes in the rom. There's really no need to get anything else. And frankly, I don't hear a lot about folks running 3rd party battery apps on their tablets. So I'm not going to be much help on suggesting one. I just know most of the task and battery apps, were designed for phones on android 2.3.
I gave up on things like battery apps, task killers, task monitors and the likes a long time ago. I learned to manage things on my own like most others do. There's no reason, once you learn a little about how android works, to add apps that take even more resources.
Bottom line, you can have every app in the world to monitor things, but what really matters, is what the "actual" battery life is.
For example, I can go 12hrs with normal usage, and still have 60%. This includes internet, sms, mail a few times, maybe some video for an hour. It depends.
Or, I can play angry birds 7 hrs straight before recharge. Not bad! And I run my processor at 1500ghz.
You can instal a cpu app, like cpumaster, and set profiles based on how much battery you have left. I typicaly set mine to start at 1500ghz, then do 2 extras to down the speed based on battery. When I use them, I can run for almost 3 days with normal usage. I do this when I know I will be camping with no electricity.
I have 4 of these profiles on my phone, and the longest I lasted, was almost 4 days before recharge.
Wish I could help you more.
This was on the portal today. It's a Droid Incredible mod that apparently improves battery life dramatically. OP has a full guide in place with info on what each tweak does. Galaxy note devs, amazing as they are, may or may not be using these (or similar) tweaks for the Note. In any case, FYI
http://forum.xda-developers.com/showthread.php?t=1621808
More snake oil... Improving your battery life tenfold with sysctl.conf changes when the radio dominates idle battery usage and screen dominates screen-on battery usage = bull****.
Maybe you can improve it a little - but tenfold? Bull****, and a ridiculously exaggerated claim like that makes me distrust any of the changes made.
I know what the prime power eaters on this device are, and sysctl tweaks aren't going to change those... Changing them requires major architectural rework of the kernel.
Entropy512 said:
More snake oil... Improving your battery life tenfold with sysctl.conf changes when the radio dominates idle battery usage and screen dominates screen-on battery usage = bull****.
Maybe you can improve it a little - but tenfold? Bull****, and a ridiculously exaggerated claim like that makes me distrust any of the changes made.
I know what the prime power eaters on this device are, and sysctl tweaks aren't going to change those... Changing them requires major architectural rework of the kernel.
Click to expand...
Click to collapse
well then... Get to work! Aren't you one if the open source kernel developers? Just kidding btw
Sent from my superior GT-N7000 using Tapatalk
Considering the vat majority of my battery usage is screen drain I doubt very much this would do much for me.
I dare say the same could be said for all note users.
Sent from my GT-N7000 using Tapatalk 2
Entropy512 said:
I know what the prime power eaters on this device are, and sysctl tweaks aren't going to change those... Changing them requires major architectural rework of the kernel.
Click to expand...
Click to collapse
That's what I thought. You guys know the device inside out, so it makes sense to bring things like this to your attention.
Incidentally, the guy says he gets 50+ hours on a single charge. My Note gives me 48+ hours (with little wi-fi though, and at 1200 MHz), so it's not that we have bad battery life.
Overclocking, init.d changes, etc are all extremely irrelevant in terms of battery use.
The main battery hog for any modern phone in the past 2 years has and always will be the screen (of course unless if you're using something like the Xperia Mini).
I'm more than happy with the Note's battery life to be honest. It's certainly better than the Sensation and One X I had previously.
The only way we will see much of an improvement will be if they make a phone the size of the Note with a 3.5" visible screen. lol
Or a 10000 mA battery.
Sent from my superior GT-N7000 using Tapatalk
bloodyhippo said:
That's what I thought. You guys know the device inside out, so it makes sense to bring things like this to your attention.
Incidentally, the guy says he gets 50+ hours on a single charge. My Note gives me 48+ hours (with little wi-fi though, and at 1200 MHz), so it's not that we have bad battery life.
Click to expand...
Click to collapse
You must barely use yours at all.
I'm lucky to get 10 hours out of mine.
Sent from my GT-N7000 using Tapatalk 2
Dont care much about battery life if you are using smartphone with its big screen, alot of connection.
There are two solution, one is spare battery alway on pocket, other complete solution is change to cheap feature phone with 30 days battery life.
senectus said:
You must barely use yours at all.
I'm lucky to get 10 hours out of mine.
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
It's mostly phone calls, the occasional game, some music. Very little wi-fi though, and data only when I need it. Brightness set to auto except when outside (where it's set to max). The fact that I sleep atleast once in those 48 hours helps the battery life a lot
bloodyhippo said:
That's what I thought. You guys know the device inside out, so it makes sense to bring things like this to your attention.
Incidentally, the guy says he gets 50+ hours on a single charge. My Note gives me 48+ hours (with little wi-fi though, and at 1200 MHz), so it's not that we have bad battery life.
Click to expand...
Click to collapse
Do you use the phone as a paper weight ??
Entropy512 said:
I know what the prime power eaters on this device are, and sysctl tweaks aren't going to change those... Changing them requires major architectural rework of the kernel.
Click to expand...
Click to collapse
I finished completely charging my Galaxy Note at 02:00 BST. After I got up at 07:00 BST, the battery level was at 86%. I switched off the Wi-Fi, force stopped Skype and WhatsApp (these are the only 2 apps I have installed so far!) before plugging the device to charge.
Background data and Auto-sync in Accounts and sync was turned off ages ago.
Before posting this message, I switched on the Wi-Fi to chat with my cousin via WhatsApp for 20 minutes. Now the Wi-Fi and WhatsApp are inactive. At the moment of typing this message, my battery level is 42%.
I have tried force stopping some of the pre-installed apps such as AccuWeather, ApMobile etc but the effort has been futile. I am aware that I need to root my device in order to get rid of the bloatwares. I am having another issue with the Auto brightness feature which I have described in another thread. I have not ventured into the realm of rooting until now because I may decide to send my device to Samsung's service centre.
I cannot figure out for myself whether my battery or my device itself has a flaw or whether it is normal and there is nothing wrong.
I will eventually pose my queries pertaining to rooting and relevant subjects. I am a novice in the field of mobile computing and I am here to learn from you all.
Thank you all for your continued patience.
Your device has a flaw, that flaw is called Skype.
Skype is a notorious battery drainer.
Coolkriss said:
Do you use the phone as a paper weight ??
Click to expand...
Click to collapse
+111111111
Sent from my GT-N7000 using xda premium
Entropy512 said:
Your device has a flaw, that flaw is called Skype.
Skype is a notorious battery drainer.
Click to expand...
Click to collapse
Thank you for your prompt response Entropy512.
After I finish using Skype and subsequently signing out, I force stop it from Settings > Applications > Manage applications, either from Downloaded or All.
I use Skype on my phone to communicate with my sister when I am away from my computer at home, especially when I am at university. Thus, I am compelled to use it.
Do you reckon force stop is turning out futile? Should I get a third party "task manager" because the default/pre-installed Task manager seems incompetent.
Please do keep your expert opinions, suggestions and advise coming.
YLNdroid said:
Thank you for your prompt response Entropy512.
After I finish using Skype and subsequently signing out, I force stop it from Settings > Applications > Manage applications, either from Downloaded or All.
I use Skype on my phone to communicate with my sister when I am away from my computer at home, especially when I am at university. Thus, I am compelled to use it.
Do you reckon force stop is turning out futile? Should I get a third party "task manager" because the default/pre-installed Task manager seems incompetent.
Please do keep your expert opinions, suggestions and advise coming.
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Click to collapse
Install BetterBatteryStats (free if download from xda). Check for wakelock to see what app is keeping your device awake.
Just as a note, there is a bug in the OS for our Note if you use the USB OTG cable. Once plugged in with any USB storage device, the unmounter process would cause the device to unable to sleep, thus causing battery drain. The only way out is to reboot.
Sent from my GT-N7000 using Tapatalk 2
usb storage unmounter
soory is this usb storage unmounter wakelock bug in all the galaxy note device?
is there a solution
or is there any app that can terminate and close the wakelocks?
i know battery stat but i want an app to kill the wakelocks and system process
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.
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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 :/
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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?
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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
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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.
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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.
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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.
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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
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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.
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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.
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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.
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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
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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?
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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
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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.