Develop Bugs

Overnight battery drain

I thought I would check and see how much battery is used overnight on my Nexus. What I found was that the Android OS kept the device awake over half the time. Also, for some reason the phone used battery as well.
I'm running stock 4.0.2, rooted and unlocked... is this typical?

Yes, this is known bug:
http://code.google.com/p/android/issues/detail?id=22878
Don't forget to star that issue ...
And tell all your neighbors ... all your friends to star it as well.
Spread the word ... tell the universe ...
Google must fix this!

Hey Guys -
I shut off location services and my battery drained only 9% in 8 hours of non use last night... It used to be around 25%. I'm thinking that Android keeps waking to check where you are... Just shutting off GPS is not enough as it will wake to find your location via wifi or cell towers.
Just my 2 cents. Give this a try to see if that helps you guys out. Google still needs to fix this but it might be a good temporary workaround.
Rob

I typically see around 8-10% battery drain overnight off the charger. And I thought I had problems. If you are losing 25% over night that seems unacceptable.
Sent from my Galaxy Nexus using XDA App

tk123456789 said:
I typically see around 8-10% battery drain overnight off the charger. And I thought I had problems. If you are losing 25% over night that seems unacceptable.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
It actually dropped from 100% to 24% overnight which is almost 10% per hour.

i lose 1% in 1.5hrs, on standby in ATT HSPA+ network, i thought that was pretty good.

gogol said:
Yes, this is known bug:
http://code.google.com/p/android/issues/detail?id=22878
Don't forget to star that issue ...
And tell all your neighbors ... all your friends to star it as well.
Spread the word ... tell the universe ...
Google must fix this!
Click to expand...
Click to collapse
Roman has fixed it or at least it appears he has. I loaded his CDMA rom "[ROM] [AOSP] Android Open Kang Project - toro build 9 [Dec 21]" over at rootz and it is putting the phone to sleep when the screen is off. My phone had be staying awake 30 - 50% of the time prior to this. I've only had the rom loaded a short time, but in the last 40 minutes of non-use my Staying Awake time has been about 2 minutes. YMMV
Good luck.

Geezer Squid said:
Roman has fixed it or at least it appears he has. I loaded his CDMA rom "[ROM] [AOSP] Android Open Kang Project - toro build 9 [Dec 21]" over at rootz and it is putting the phone to sleep when the screen is off. My phone had be staying awake 30 - 50% of the time prior to this. I've only had the rom loaded a short time, but in the last 40 minutes of non-use my Staying Awake time has been about 2 minutes. YMMV
Good luck.
Click to expand...
Click to collapse
Thanks for the reply... that's encouraging to hear. I'd like to stay stock for a while so hopefully 4.0.3 drops soon!

I know many people recommend rooting and using a custom rom, but I've had a poor experience with that. Having said that, I've been working on battery issues and this is a picture of my battery drain overnight. It basically took a nosedive.
What I don't understand is some people are getting great battery life from this phone. I've turned off all my widgets and followed many recommendations - but frankly I shouldn't have to do any of that and even so my battery life is abysmal.
Is there any answer to this problem short of rooting? Do I have any reason to believe that google will acknowledge and correct this issue?
By the way I had a Droid Razr for a month prior to the Nexus, and it would lose no more than 10% of it's battery overnight.

I do everything "wrong" (syncing, gps - wifi - data on) I have 5 widgets on my home screens and I loose less than a % per hour over night if not on the charger.
When I am using my phone I keep the screen on full brightness. This will get me about 12 hours of use with 4 hours screen on time.
I have no idea why some people get great battery life and others don't. There must be bugs floating around. Lets see what 4.0.3 brings. I'm unlocked and rooted but still stock.
Sent from my Galaxy Nexus using xda premium

That's the frustrating thing - it's working great for some people.
I have to return mine because the headphone jack doesn't do stereo, maybe I'll get lucky and the new one won't have signal and battery issues.
The Razr never dropped voice or data - the Nexus drops both multiple times during the day.

McDeadagain said:
That's the frustrating thing - it's working great for some people.
I have to return mine because the headphone jack doesn't do stereo, maybe I'll get lucky and the new one won't have signal and battery issues.
The Razr never dropped voice or data - the Nexus drops both multiple times during the day.
Click to expand...
Click to collapse
I would try a different radio. I wasn't exactly thrilled with reception at first. A North American radio changed that. But i would still give moto a step up on reception.
I think more people should also consider congestion in their city to how well battery life does. Can Make a big difference. Otoh though, that doesn't account for standby at night when you're asleep. It would seem to me no matter how your phone is setup 1% an hour should be the norm, unless your phone downloads a lot of data.
My grandma beat me down and took my nexus. Sent from a jitterbug with beats by dre.

McDeadagain said:
That's the frustrating thing - it's working great for some people.
I have to return mine because the headphone jack doesn't do stereo, maybe I'll get lucky and the new one won't have signal and battery issues.
The Razr never dropped voice or data - the Nexus drops both multiple times during the day.
Click to expand...
Click to collapse
Ya, try swapping it, IDK... I have yet to drop a single call on my Nexus. One thing i can say is Samsung needs to look at their quality control. I definitely got a good one. I don't see the REAL problems others are having. The fact that most phones are fine, and some are duds is the one thing i will hold against Samsung. Gives a really good phone a bad name when so many have issues.
I can say its not all of them.

McDeadagain said:
I know many people recommend rooting and using a custom rom, but I've had a poor experience with that. Having said that, I've been working on battery issues and this is a picture of my battery drain overnight. It basically took a nosedive.
What I don't understand is some people are getting great battery life from this phone. I've turned off all my widgets and followed many recommendations - but frankly I shouldn't have to do any of that and even so my battery life is abysmal.
Is there any answer to this problem short of rooting? Do I have any reason to believe that google will acknowledge and correct this issue?
By the way I had a Droid Razr for a month prior to the Nexus, and it would lose no more than 10% of it's battery overnight.
Click to expand...
Click to collapse
Thats just horrible idle drain. Something kept it awake you can see.
I feel bad cause my gsm version is literally the best idle drain phone ive ever had. It stays dead flat for me and last night i lost about 1% every 2 hours, and tgat is witg data on and two gmail syncing etc. Its just awesome. I think there is something wrong with tge verizon model. My phone is stock too.

McDeadagain said:
I know many people recommend rooting and using a custom rom, but I've had a poor experience with that. Having said that, I've been working on battery issues and this is a picture of my battery drain overnight. It basically took a nosedive.
What I don't understand is some people are getting great battery life from this phone. I've turned off all my widgets and followed many recommendations - but frankly I shouldn't have to do any of that and even so my battery life is abysmal.
Is there any answer to this problem short of rooting? Do I have any reason to believe that google will acknowledge and correct this issue?
By the way I had a Droid Razr for a month prior to the Nexus, and it would lose no more than 10% of it's battery overnight.
Click to expand...
Click to collapse
Is it related to wifi? Noticed most of your drain was while wifi was off.
My grandma beat me down and took my nexus. Sent from a jitterbug with beats by dre.

I just tried a new ROM last night and had an improvement with my phone sleeping more of the time the screen was off yet the battery drain doubled to 3%/hour. Can someone explain how that makes sense? My phone slept 10 of 11 hours during this time. And the CPU was scaled down at 350 mhz by the kernel the entire time while the screen was off. So confused...
Sent from my Galaxy Nexus

Might need to calibrate battery.
My grandma beat me down and took my nexus. Sent from a jitterbug with beats by dre.

105437 said:
I'm running stock 4.0.2, rooted and unlocked... is this typical?
Click to expand...
Click to collapse
i have the same setup and loose less than 1% an hour, when the phone is idle

Thanks to the kind folks who have replied with questions, comments, or just sympathy
There are of course a lot of threads in this forum related to the Nexus battery life and I've been trying to do my own due diligence. I have removed every widget from the phone - even those which are just 'switches' and should not make any data requests. It was still draining.
Then I removed the fancy Light Flow lite app that gave me pretty notification lights - still drained.
Finally, I removed Battery Monitor Widget - the very app I was using to try to find the cause of my drain.
Took the phone off the charger at about 10:30 this morning. Used it for navigation for 20 minutes, ran the bluetooth for a bit and that took quite a bit off the battery. However, when I got home I forgot to turn the wifi on and set the phone down. Sitting there doing nothing connected to 4g the battery dropped less than 10% over three hours. I didn't look closely enough to see the exact numbers but overall I'm at 60% now after 6 hours of what I would call moderate use.
Most importantly, the phone seems to actually sleep now when not in use. I don't mind if the battery drops a bit faster during use - it has a great screen and wicked fast 4g. I just don't want it to tank when it's not doing anything.
For right now, it's acting exactly how I would expect and I'm very pleased. Will probably give it another day and then try to add back my beautiful widgets time/weather/calendar widget on the home screen and see what kind of damage that does. Maybe try a different battery widget as I like the percent left in the notification bar.
Good thing is, now I have a baseline that I'm happy with to measure my performance from.
Thanks again for those who've posted in this thread. Hope anyone else having similar issues might benefit from my experience.

And I'm right back where I started. Phone had insomnia last night. I took it off the charger at 100% last night at midnight and it died within five hours sitting on my night stand.

AMAZING battery life on gsm Gnex

This is from my first full charge cycle. Completely stock. Amazing! This is 3.5 hours screen on and 2 hours voice calls. It's not letting me upload those screen shots for some reason.
Sent from my Galaxy Nexus using XDA

thats pretty good!

Yeah mine has been pretty solid as well. Yesterday after 17hrs I was still at 35% which is better than most Android phones I've had.

I really think that galaxy nexus standby is amazing but the screen is the only thing that really drains the battery. So if you don't use it heavily, you should be fine. I use my nexus moderately and I still get through a day with about 40% left.
Sent from my Galaxy Nexus using XDA

Pretty good... i find voice calls and cell signal to be main battery drain cause on Sprint's turtle 3G network.
With 2100mah extended battery, 15% juice left unplugged at 8:30am, replugging in at 10pm, 2.5hr screen, 1hr gps, 30min voice

2nd full charge cycle
Here are the results from my 2nd full charge cycle:
40+ hours off charger; 4.5 hours screen-on time. Remarkably good.

How are you getting such good battery life? i can't seem to even last a whole work day, requiring me to charge before I leave the office.
I just got my replacement, so hopefully it will be better this time around.

CoronaDelux said:
How are you getting such good battery life? i can't seem to even last a whole work day, requiring me to charge before I leave the office.
I just got my replacement, so hopefully it will be better this time around.
Click to expand...
Click to collapse
I use 30-40% brightness. Black wallpaper. Other than that, nothing special. I only have 1 gmail account syncing, unlike some of the people on here that have 3 or 4 email accounts syncing. I also only have like 2-3 widgets running (beautiful widgets smaller home, audiomanager pro, astrid, and maybe one or two others). And most of the screen on time is doing relatively simple tasks like web browsing, reading xda, google talk, etc. Nothing too terribly intensive like video.
Based on my experience though it seems like pretty much anybody except the heaviest of users should be able to get at least a full day's use out of it, and lighter users should easily be able to get 2.
Is yours GSM? I hear the Vzw/Sprint ones get far worse battery life.

kyokeun1234 said:
I really think that galaxy nexus standby is amazing but the screen is the only thing that really drains the battery. So if you don't use it heavily, you should be fine. I use my nexus moderately and I still get through a day with about 40% left.
Sent from my Galaxy Nexus using XDA
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Click to collapse
I agree. I ended a day with ~70% battery left, and most of my usage was the screen (~30 minutes or something). I haven't had any issues with my battery dying on me yet. If I left the screen off all day, I could probably use 10-15%.

Nvm
Sent From My Sprint Galaxy Nexus via XDA Premium

chrikenn said:
I use 30-40% brightness. Black wallpaper. Other than that, nothing special. I only have 1 gmail account syncing, unlike some of the people on here that have 3 or 4 email accounts syncing. I also only have like 2-3 widgets running (beautiful widgets smaller home, audiomanager pro, astrid, and maybe one or two others). And most of the screen on time is doing relatively simple tasks like web browsing, reading xda, google talk, etc. Nothing too terribly intensive like video.
Based on my experience though it seems like pretty much anybody except the heaviest of users should be able to get at least a full day's use out of it, and lighter users should easily be able to get 2.
Is yours GSM? I hear the Vzw/Sprint ones get far worse battery life.
Click to expand...
Click to collapse
...your setup works on my GNex!
thanks
Sent from my Galaxy Nexus

I bet it's not LTE
CoronaDelux said:
How are you getting such good battery life? i can't seem to even last a whole work day, requiring me to charge before I leave the office.
I just got my replacement, so hopefully it will be better this time around.
Click to expand...
Click to collapse
I'm guessing it isn't using LTE. If I only connect by wifi and turn off data syncing then I can get more than a day too (with moderate use).
LTE really drains the battery.

alephnaut said:
I'm guessing it isn't using LTE. If I only connect by wifi and turn off data syncing then I can get more than a day too (with moderate use).
LTE really drains the battery.
Click to expand...
Click to collapse
Correct it is gsm, not lte.

That's impressive! Stock rom allows you to get at least 20 hours of WiFi/3G with 3-4 hrs of screen. Auto brightness. Here in Europe we don't have LTE, so our batteries could last a little bit more.

avarage battery use is over 13 hours (cm9+franco kernel).

10 hours and 53 min it dropped to 94% worth mentioning I didn't even touch the phone, can't seem to post a screen shot of it
Right now I am at 45% and I used it quiet heavily today
I didn't charge the phone even if it sems like it
Sent from my Samsung GNexus

Some of the best I've seen so far from my phone (about two weeks old) is posted here. Almost 36 hours of uptime! Wifi on the whole time, had a signal for most of it too, but guarantee there were some times that I didn't (because I was trying to use the phone then). This includes time spent playing some games as well. I've fired up Osmos HD, Everlands, Swords and Soldiers, and Draw Something at some point during that charge for at least a few iterations of play on each game. Decent amount of browsing, including hits from Google Shopper for some price comparisons. I'm syncing one Google account and one Exchange account, with black wallpaper, auto brightness (not tuned) and the calendar, news and weather, settings, and prepaid usage widgets. Stock ICS and unrooted.

i have ext battery and can run (what seems like) forever

Help with battery life; bad battery?

Mine has been terrible for awhile. Even Odin back to stock and it wasn't any better. Now I'm on a clean flash with very little installed and I've only seen minimal improvement.
Here are a couple of screenshots from this morning looking at while I was sleeping. Lost 25% overnight. Had an hour of awake time with near zero screen time, seems like a lot of battery lost

You're letting way too many apps sync in the background, your phone is not reaching deep sleep. I bet you left your Google account on auto sync. Your email is syncing too often. don't leave wifi on overnight. You're getting poor signal too.
Sent from my SPH-D710 using Tapatalk 2

25% loss is not bad at all. I've had 68% loss complain about that lol
Sent from my SPH-D710 using Tapatalk 2

revamper said:
You're letting way too many apps sync in the background, your phone is not reaching deep sleep. I bet you left your Google account on auto sync. Your email is syncing too often. don't leave wifi on overnight. You're getting poor signal too.
Sent from my SPH-D710 using Tapatalk 2
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Click to collapse
I've always let my Google account sync and left wifi on at night. It just seems like the last month or so it's chewed up lots of battery. Heck with my old desire it'd only use 3-4% (with basically the same setup) overnight.

I had this problem and was able to fix it by repeatedly throwing my battery on the sidewalk. It helps to re-excite the electrons in the battery and improve battery life.
I am trolling, in all seriousness, lithium ion batteries significantly reduce in capacity over time. It is perfectly normal for the battery to last 25 to 50 percent less long just a year in. Pro-tip, you can find replacement stock batteries on Amazon for about $10, just make sure it is an OEM battery. If you are nice to the tech or store manager at your local sprint corporate store, sometimes they will give you a replacement battery for free.
Sent from my SPH-D710 using Tapatalk 2

Thanks. I'm with us cellular and the phone is only two months old. They do have a battery swap benefit, but I think it can a crap shoot on the quality you get back.
I un installed that hacked s-voice app, that seemed to help quite a bit.

So it must be something with wifi. Had wifi off all day yesterday at home and last night (just using 3g connection) and I only lost 2% overnight. On 16 hours with an hour of screen time and still at 79%. Not seeing the wake ups and wakelocks like I was before.

Also if you remove your battery. Try to spin it with it laying flat. If it spins replace the battery. Bloated batteries do not hold a charge. I w
sent from my BAD A$$ Epic touch

Sounds like you've got apps set to sync when on Wifi only then. To confirm, try leaving Wifi on but turning off background data. If your battery life improves, it's definitely an app. Then you just have to go through your apps and figure out which one it is.
Gmail can be set to push so you don't have to worry about it syncing unless necessary. But if you get a ton of emails, it's still going to hurt.
Also, I disagree with revamper, if you get poor signal you should leaving Wifi on as much as possible. Being connected to solid Wifi will drain less battery than your phone constantly polling towers for a better signal (given identical app behavior, which you don't have atm). I'd still turn Wifi off when moving about, as you won't be on a single, solid Wifi connection and you phone will be polling both towers and Wifi networks, resulting in increased battery drain. You also want to set Wifi Sleep Policy to not sleep when the phone screen is off (otherwise as soon as you turn off the screen Wifi is disabled and you're polling towers again). From what you've said, it sounds like this is already set though.
The best thing I've ever done for my battery life was flash Calkulin's ICS ROM. 4 days of standby or a full day of some really heavy use. Email is the only thing that syncs automatically (push). Other apps like Facebook aren't that important to me so they only sync when I open them.

patrao_n said:
Also if you remove your battery. Try to spin it with it laying flat. If it spins replace the battery. Bloated batteries do not hold a charge. I w
sent from my BAD A$$ Epic touch
Click to expand...
Click to collapse
I had a battery cook in the phone this weekend and this is what the sprint tech did. I picked up my phone after being on the charger overnight and it was almost hot enough to burn me. I took it in, they popped it out and spun it like a top... Handed me a new battery within 5 minutes.

Yeah it's probably wifi. I also have much higher idle drain on wifi than 3G right now, although I haven't had time diagnose it. Actually, I hadn't bothered because I was planning to move to an AOSP ROM from stock ICS once kernel source was published, but I'm losing my patience. The AOSP guys seem to have things worked out without source anyways.
Sent from my SPH-D710 using Tapatalk 2

I also have extremely high drain while on wifi, I just made it so the wifi shuts off when the screen shuts off

Bad Battery? Bad device?

I've had my Verizon Galaxy Nexus since launch day. I've NEVER been able to get more than 3.5 hours of screen-on time with this thing. But lately it's been even worse. I'm seeing anywhere from an hour to two hours before I have to reach for a charger, usually right around 1.5 hours of screen-on time. It will sleep for a good long while (no wakelocks causing drain that I've found).
I keep sync on for some Google services, like Gmail, but not many. Battery life doesn't really seem to change regardless of using 3G or LTE, nor does wifi seem to improve. When the phone is awake, and the screen is on, the battery just drops like a rock. Literally every time I look at the battery percentage in the status bar, it's dropped another 1-2%, even if I'm not doing anything.
I've run everything from stock 4.0.2 to AOKP JB nightlies (which I'm currently running, with imo's kernel). I've tried practically every ROM/kernel combo out there and never seen an improvement. I've undervolted, underclocked, played with brightness settings, everything I can think of. It's been wiped, the battery has been occasionally cycled, etc, and nothing seems to improve the battery life--it's only gotten worse over time. I did, at one point, have an OEM extended battery, but it wasn't a significant improvement enough for me to get over losing "the hump" so I got rid of it (actually traded it for a Droid X, lol).
So I'm kind of at a loss with this thing. Does the battery really suck this much? The other day, a coworker with a Galaxy S III on Sprint used his phone for over 3 hours of screen-on time (I looked at his battery stats) leaving him at about 35% battery. Mine was also at 35%, with only 1 hour of screen on time. I understand the GS3 gets better battery life in general, but this is getting to the point of being unacceptable.

Not unusual. Big screen = big power requirement. Poor reception (i.e. bad coverage area) saps the battery the quickest, extended screen time on is a close second. Have you tried the extended battery? It adds enough to get well through a work day and commutes if you're not using the phone as a laptop. However if the phone is being used as a laptop, I'd suggest buying an actual laptop, or better yet a tablet. I get 10 hours of steady use out of my Xoom.
Sent from my Xoom using xda premium

Try completely wiping your device through download mode and setting everything back up
Sent from my Galaxy Nexus using xda premium

Screen shots of apps running, processes running... Gsam battery stats, and etc...
Sent from my Galaxy Nexus using Tapatalk 2

The phone doesn't have amazing battery life but what you're describing sounds pretty abnormal. It may be a bad battery.

Yeah seeing as the battery is around 9 months old, I would first try and get another battery and see if that makes a difference. Most batteries dont go bad that quickly but wouldnt be surprised if it did. Worst case you would have an extra battery that you can also keep fully charged as it seems though you have tried most everything you could regarding any software issue.

Pathetic battery life

Running 4.2.2 I get 9h of standby and 1h screen on at the most on a HSPA+ Galaxy Nexus using a OEM 2000mAh extended battery.
I checked wakelocks and there was nothing out of the ordinary. Anyone else getting this bad battery life?
A phone that dies half through the day with light usage is pretty much useless. (I've had to use the 1750, 2000 and the 3800 battery to come through the day.)

Depends if you have any apps syncing a lot or using the radios a lot.
Signal strength plays a big role in battery life as well.
Sent from my Galaxy Nexus using Tapatalk 2

Only Gmail/whatsapp sync a bit, the rest is all turned of/ wifi only. Used gps maybe 20min for google maps ans public transport.
Signal strenght was mostly good with the occasional no signal, 10 min total.
Still, it shouldn't be this bad.

androo45 said:
Only Gmail/whatsapp sync a bit, the rest is all turned of/ wifi only. Used gps maybe 20min for google maps ans public transport.
Signal strenght was mostly good with the occasional no signal, 10 min total.
Still, it shouldn't be this bad.
Click to expand...
Click to collapse
Try relocking your boot loader and flash a stock google img
Sent from my Galaxy Nexus

dude mine is like that and i have no idea why. i have a brand new extended 2100maH battery, underclocked, undervolted, no sync, no bluetooth or gps, with alot of apps that i feel drain power (maps, LWP, etc.) uninstalled. most i get throughout the day is a good 8 hours with 2 hours of on screen. i text but not that much. idk. weird **** yo
---------- Post added at 01:15 AM ---------- Previous post was at 01:09 AM ----------
btw im using sprints galaxy nexus running the unofficial xylon, with ak diamond19 kernel, with lte off, and pie controls.

Same here. I'll charge my phone to 100% set it down pick it up 15 minutes later 8-11% battery gone. No GPS, screen turned down, underclocked. I don't get it. I have a Toro also.. Just have to make due I guess till I figure it out.
Sent from my Galaxy Nexus using Tapatalk 2

I just started using a Nexus this week. I came from a RAZR M. The first thing I noticed was the lack of battery life. I found a couple tweaks to help with this issue.
They are: disable network time and date sync, 3g only till you really need to charge through some web browsing, undervolt to 1GHz, and minimal to 383 or so. I flashed the Franco kernel and use the Wheatley governor. Auto brightness was on auto. I also have the 2100mah battery.
I can almost reach 3 hours screen time per charge. I didn't realize that's a feat so I haven't taken a screenshot. My M got around 5 hours screen time. Ugh.. But the Gnex has won me over.
Sent from my Galaxy Nexus using xda premium

Try BetterBatteryStats, this will give you more information on what's going on behind basic android charts).
toro comes with 1850mAh battery(
Sent from my Galaxy Nexus using Tapatalk 2

Something is definitely wrong bro... I have the same gsm model with the stock battery. With light usage I can easily go about 36 hours off the charger with 3 hours screen time. Sync with Gapps, Facebook, Keep, Drop box, Google +
Something is Jacked up somewhere...
Sent from my Galaxy Nexus using xda premium

Use trickster mod to see if your device is deep sleeping. I've had deep sleep issues on 4.2.2
Sent from my Galaxy Nexus using Tapatalk 2

And if you undervolt too much it will actually destroy your battery life
Toro | Xylon | Diamond

My device is deep sleeping fine, it is really a 3G/data issue. On wifi I can get 4h screen on and days of standby, no problem. But on mobile data my battery just evaporates in thin air.
I think the real problem is the 3G radio power management, that was excellent on 4.0 or 4.1 (never had issues) but on 4.2 it is outrageous.
The thing is, on wifi (home/work/...) I have the possibility to charge my phone. If I'm on HSPA+, I haven't.
My stats on wifi at the moment: 2h standby, 35min screen on 89% left.

Select 2G only if you do not really need 3G or LTE for phone and data! For simple phone calls or texting, the quality is not much different between 2G, 3G or LTE. In fact, in my city, there is more 2G than 3G and LTE transmissions.
It will at lease save you 30% battery.

I can put my phone on 2G only, but than I can't search something when I'm on a call, get delayed sms (really noticable). Not mentioning 2G is a pain in the ass, even for IM and email.
And constantly switching between 2G and 3G is also not a good option for battery life. Turning LTE off on a maguro won't do anything.

It doesn't matter how many features you turn off, battery life will not improve. Your phone will become a dumbphone and it will still die on you. I recommend to stop turning on the screen constantly and use it lightly. The screen used on this device is not efficient at all. I hope the next Nexus greatly improves on battery life or I'm switching to something else.
Sent from my Galaxy Nexus using xda premium

a1exus said:
Try BetterBatteryStats, this will give you more information on what's going on behind basic android charts).
toro comes with 1850mAh battery(
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
+1
Android OS is high, BBS will tell you what it is, it's usually a kernel wakelock. Also if you don't use Maps, disable it, because since they brought the offline prefetching, it starts services like mad and runs in BG. Android AOSP has it's own location services and MapView, so you won't loose that.

My phone has become almost unusable after receiving the 4.2.2 update (on Verizon, totally stock phone). Battery has gotten as hot as 113F at times, and I can watch it decrease 1% at a time very quickly...
BBS keeps pointing to Exchange. I removed the account the first day and added it back in and that seemed to have helped initially but now is no longer the case. I haven't wiped the phone in over a year plus so this is my next step.
Is there any way to see what apps were recently updated?

Same battery problems for me (maguro). Not long ago I could use the phone for around 48 hours without charging, and suddenly one day to another it all changed and is drained within 9 - 10 hours. I have tried everything:
- monitoring with betterbatterystats (nothing out of the ordinary),
- tried different roms (including stock 4.0, 4.1),
- tried monitoring with betterbatterystats without any apps installed (disbled google apps to prevent syncing), without wifi / 3g / location services / NFC etcetera, even without sim card. --> No big battery draining wakelocks.
- tried different kernels
- tried new battery
- checked if phone was going into deep sleep (did that fine)
All without any impact, the battery life is still very bad (easily draining 5+ % per hour, if it is on standby all the time).
I'm starting to think it might be a hardware problem, I don't know what to do anymore without sending it back for warranty.

3 initial things I always look for when diagnosing somebody's battery woes:
1) Have you loaded (adb then fastboot) the totally stock nexus images from Google's website? At least for 3 days and no additional apps installed
2) How old and what is the usage of your OEM battery? If you're using a 3rd party battery who knows what will happen
3) What's your signal strength like in your daily travels? Bad signal will eat your battery almost as much as screen time
If you still have bad battery after thinking about those 3 questions then you have a unique situation. Otherwise, your problem might be simpler than it seems

IMO, turning off gps/wifi etc doesn't really help with battery life, at most 1-2%. Usually what causes battery to drain faster is when apps prevent the phone from sleeping, or if they're constantly running in the background.