Develop Bugs

Do I need to exchange my GNex?

So I'm considering either trying to exchange my GNex itself or my extended battery. I simply cannot get the battery life that most people, including my personal friends who have the device, are showing. My battery graph is never smooth and rockets downward at awkward angles. I've tried stock, many different roms/combos of kernels. I've also tried most battery tweaks I have seen. I had the Android OS bug originally, though after I tried out the 4.0.4 update it seems to be fixed. Nothing seems to be working. As an example, I had 15% battery left after 10 hours yesterday with no voice calls, 35 mins of screen time (barely anything), and having used no apps besides texting and a small amount of browsing. On the extended battery, that's fairly terrible. A voice call of 15 minutes will drain my battery about 10%. Nav will drain about a percent a minute.
Also, I live in a major city and never have signal issues. However, I am on wifi about 90% of the day. My brightness is always set around 15%.
As a test, today I flashed stock GummyNex and install absolutely no applications besides BetterBatteryStats. I currently have 30 minutes of screen time, and 15 minutes of voice calls, and have done nothing else besides a couple texts/a few minutes of web browsing. My results are fairly bad for having absolutely no applications installed or running, especially on a fresh install. If I had other apps installed and some things syncing, or if I had used my phone like a normal person and done anything else besides very minimal browsing, my phone would have died a while ago.
I'm attaching a few screenshots of when my phone was at 50% with this fresh GummyNex.
So the question is, could there be a hardware issue here that is stopping me from having reasonable battery life? Should I try to get an exchange?

Exchange it, I'm on my 4th Gnexus due to signal issues and have experienced the battery length differ from phone to phone, am about to exchange this one due to the flash led not working lol.
Sent from my Galaxy Nexus using XDA App

Are you using 4G LTE?

Stephen289 said:
Are you using 4G LTE?
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Good question, meant to mention that. I almost always turn 4g off. However, I am on wifi 90% of the time regardless.

LaGgY_42o said:
Exchange it, I'm on my 4th Gnexus due to signal issues and have experienced the battery length differ from phone to phone, am about to exchange this one due to the flash led not working lol.
Sent from my Galaxy Nexus using XDA App
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Click to collapse
Did you have much trouble exchanging it? What did you tell Verizon was your problem?

eagle132 said:
So I'm considering either trying to exchange my GNex itself or my extended battery. I simply cannot get the battery life that most people, including my personal friends who have the device, are showing. My battery graph is never smooth and rockets downward at awkward angles. I've tried stock, many different roms/combos of kernels. I've also tried most battery tweaks I have seen. I had the Android OS bug originally, though after I tried out the 4.0.4 update it seems to be fixed. Nothing seems to be working. As an example, I had 15% battery left after 10 hours yesterday with no voice calls, 35 mins of screen time (barely anything), and having used no apps besides texting and a small amount of browsing. On the extended battery, that's fairly terrible. A voice call of 15 minutes will drain my battery about 10%. Nav will drain about a percent a minute.
Also, I live in a major city and never have signal issues. However, I am on wifi about 90% of the day. My brightness is always set around 15%.
As a test, today I flashed stock GummyNex and install absolutely no applications besides BetterBatteryStats. I currently have 30 minutes of screen time, and 15 minutes of voice calls, and have done nothing else besides a couple texts/a few minutes of web browsing. My results are fairly bad for having absolutely no applications installed or running, especially on a fresh install. If I had other apps installed and some things syncing, or if I had used my phone like a normal person and done anything else besides very minimal browsing, my phone would have died a while ago.
I'm attaching a few screenshots of when my phone was at 50% with this fresh GummyNex.
So the question is, could there be a hardware issue here that is stopping me from having reasonable battery life? Should I try to get an exchange?
Click to expand...
Click to collapse
I would love to have battery like that. Mine can barely last 9-10 hours.
Sent from my Galaxy Nexus using Tapatalk

LaGgY_42o said:
Exchange it, I'm on my 4th Gnexus due to signal issues and have experienced the battery length differ from phone to phone, am about to exchange this one due to the flash led not working lol.
Sent from my Galaxy Nexus using XDA App
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I had to exchange one also, defect. Battery died in under 5 hours. Didn't have amy questions asked, exchanged it right away. This is my new battery life. Not as bad, but still jealous of my nexus s battery life.
Screen on for 15m of just whatsapping
Sent from my Galaxy Nexus using Tapatalk

I have the extended GSM battery but even with my original battery I got more than a day as long as I wasn't playing where's my water constantly.
I turn off WiFi when the screen is off, I figure data plan can pick up stuff.

CASz said:
I have the extended GSM battery but even with my original battery I got more than a day as long as I wasn't playing where's my water constantly.
I turn off WiFi when the screen is off, I figure data plan can pick up stuff.
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I'm so jealous :+
Sent from my Galaxy Nexus using Tapatalk

Do I have a bad battery or phone?

I get 3-4 hours battery life at best I see people saying they get 10 hours I don't see how that is possible? Is my phone a dud or what this is very frustrating. It does the samething On the extended 2100mah battery. I'm running aopk milestone 4 and glados kernel
Sent from my Galaxy Nexus using xda premium

It looks like you were had screen on for close to 2 hours and made a phone call, albeit short. This is normal battery life for as much as you use the device.

You should try manually sync or set the syncing interval as high as possible.
Wifi always ON doesn't affect the battery life unless your wireless connection is weak/unstable.
Lower your screen's brightness or use Auto Brightness.
Fully charge your phone and let it alone for 2, 3 hours and check how much battery drains. If it drains 3-4% in idle mode, it's normal. Check also if your phone wakes up a lot, maybe some apps are running in the background and they wake your phone up frequently.
Hope it helps.

I used to have really poor battery life and like you wondered how people managed to get the stats I was seeing here.
I recently decided to do a factory reset for a different reason and to my surprise my battery life has improved incredibly. Yesterday I got over 18 hours in total with over 4 hours on screen time. This was with the stock gsm battery. Granted I was using wifi throughout but I was lucky to get 8 hours before the reset, even with wifi. With 3g I'm now getting 14 hours easily with over 3 hours screen time.
My point is if you've never done a factory reset, you may want to give it a go.
Sent from my Galaxy Nexus using Tapatalk

It's a bit hard to diagnose the problem based on only a screenshot of your battery stats.
Since your screen is using over 50% of your battery life, my guess is that you just had your screen on for about two hours of the total two hours and forty-five minutes. It's normal to not get more than about two hours of screen time. (Tap on the Screen part of battery stats to get more info on how long the screen was on for.)
In my experience with three Android phones (MyTouch 3G, MyTouch 4G, Galaxy Nexus), all the usual tips to conserve battery life pretty much do nothing to improve battery life: turning off syncing and background data, turning off wireless, don't use widgets, turn off GPS, etc.
Pretty much there are two big battery suckers on Android phones and particularly the Galaxy Nexus--the screen being on and LTE being on. If you dim the screen or just keep it off, you will seriously prolong the battery life. And if you use CDMA only, you will also seriously prolong your phone's battery life.
That said, it's also possible something is wrong with your phone... or your battery. We can't know just from the screenshot you posted.

This looks normal. How much screen on time do you have?
Sent from my Galaxy Nexus using XDA

My screen on time is about 1h 30 minutes with WiFi ON.. 3g/sync/gps off auto brightness

I can't stress this enough, every time.
PUT YOU PHONE DOWN
AND PAY ATTENTION

Smokeey said:
I can't stress this enough, every time.
PUT YOU PHONE DOWN
AND PAY ATTENTION
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These kids these days...

4G Battery Drain

Hey, im on Telus so i dont have any other modes I can switch to to lower the drain. Ive noticed my battery drain is HORRENDOUS
Over the past 4 hours ive dropped 60%!
Now im wondering if im just running too many apps or if my stock battery may not be holding a proper charge anymore, and wanted to compare with others to see if others are running the same amount of apps and getting better battery or what
Ive got the following on:
Trillian (IM app)
K9-mail checking 2 aps
Regular Sync (Twitter, FB, Dropbox, Google(Calendar, Gmail, Contacts)
The battery usage summary seems to lie, 35% is the screen but only 13 minutes. Yet im at 40%
Android System at 20, Cell standby 13, Phone Idle 8
While heading to work, i ran DI Radio(music streaming), and lost 20% over around 35 minutes.
Im using the Tuesday rom with it's default kernel.
Is there anything I can do for better battery, because I dont have wifi in most places, and im running 3-4 bars constantly yet the phone just drains rentelessly. Even my Mugen battery was only lasting 16 hours...

It's quite possible that it's the ROM. I used to always get 8 hours on a single charge, regardless of location or ROM. I'm running Eugene's CM7 and I'm getting 13 hours on the same typical usage.
I'm running on Telus as well, with no wifi at all.
Although I am not running all of your apps, I would still consider myself a moderate to heavy user.
Sent from my Samsung SGH-T989D using xda premium

skadude66 said:
It's quite possible that it's the ROM. I used to always get 8 hours on a single charge, regardless of location or ROM. I'm running Eugene's CM7 and I'm getting 13 hours on the same typical usage.
I'm running on Telus as well, with no wifi at all.
Although I am not running all of your apps, I would still consider myself a moderate to heavy user.
Sent from my Samsung SGH-T989D using xda premium
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Seems rather sad that the phone can only do 8 hours on a charge. Im going to restore my juggernaut and see how that compares i guess.

Rekzer said:
Seems rather sad that the phone can only do 8 hours on a charge. Im going to restore my juggernaut and see how that compares i guess.
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Yeah, I know how you feel. Just experiment other ROMs and see if you get any changes.
How much usage would you get out of juggernaut?
Sent from my Samsung SGH-T989D using xda premium

Its been a while since ive run juggernaut. But it used to only drain 10% an hour i believe on 4g. I've restored my nandroid of Jugg and will be monitoring that.

Rekzer said:
Its been a while since ive run juggernaut. But it used to only drain 10% an hour i believe on 4g. I've restored my nandroid of Jugg and will be monitoring that.
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Alright keep us updated!
Sent from my Samsung SGH-T989D using xda premium

any syncing or usage of the network will take a drain. any usage.
you can always turn on airplane mode and let it sit a few hours and see the drain, that determines whether its network or a ROM/kernel drain.
But yes, using 4G has big battery cost

Battery Life
I will tell you what, I have wasted so many hours playing with different ROM's and what not to find the one with the best battery life. And I will tell you what, the DARKSIDE:IGITAL::WARFARE ROM's out do any other ROM out there. I dunno what it is that thederekjay is doing, but Samsung should get this guy on pay roll because his work is the best.

I'm at hour 8 today on Darkside Digital Warfare, and 70% free from 8am to 4:30pm. I have push corporate email, automatic brightness, friendcaster push, and a slew of accounts and it runs like a champ with amazing battery.

Make sure your phone is going into Deep Sleep as often as possible when screen is off. My phone seems to be extremely picky in regards to which charger it likes and more often than not (even had this happen on the stock charger) the phone refuses to sleep after being charged (even if only for a few seconds...).
Download CPUSpy from the market and after each charge, go to CPUSpy, press menu and Reset Totals (phone cannot enter Deep Sleep during charging so it's important you start fresh after a charge to get accurate sleep time). Turn the screen off for a minute or two and turn it back on. Press menu again and Refresh Totals. In my experience, if the phone is not sleeping at this point - Deep Sleep showing in Unused States - then it will not sleep all day and remain in 384Mhz for hours, killing the battery rather quickly. From then, if I plug the phone in a supported charger (even for a second) and disconnect, Deep Sleep resumes normally. Rebooting always fixes it too.
If, like me, a lot of people also have this problem with the stock charger as well, I bet many are dissatisfied with the battery performance... The phone is supposed to spend the majority of it's time in Deep Sleep. I get this issue with several different chargers and cables and on different ROMS / kernels (including stock... go figure).

Im pretty sure its the signal itself draining it. It uses sleep for at least 40% of the time its on. I use my phone a good amount, but its the fact that if it sits on 4g even with the screen of, its rapidly draining during this time. ive even reset timers and left it sitting for an hour and itll be in sleep but lose 8% over an hour just doing nothing. I still wanna be able to recieve notifications tho so turning off data isnt an option. I will test turning off data anyways to see if the drain stops.

The battery drain is all those persistent internet apps running. That is what you call heavy usage. Trillian and the FB app being the two biggest. Music streaming would be up there as well if you aren't in good signal area. Look at your battery stats and see what your signal strength is.

wh01sl1k360d said:
I will tell you what, I have wasted so many hours playing with different ROM's and what not to find the one with the best battery life. And I will tell you what, the DARKSIDE:IGITAL::WARFARE ROM's out do any other ROM out there. I dunno what it is that thederekjay is doing, but Samsung should get this guy on pay roll because his work is the best.
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I second this. If battery problem persist download better battery stats to see if you dont have any kernel wakelocks
Sent from my SGH-T989 using Tapatalk

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.

Galaxy Note 2 Battery Life

Hello guys.
I've been reading these forums for a few months now and find it very very helpful in configuring my device. It's just now that i decided to sign up so i can be part of this great community.
This is my first ever post and i would like to get help regarding my battery life.
Ive read a few articles about battery saving and also from forums where people usually get more than a day's worth of battery life. That got me wondering why i only get around 8-10 hours average considering i only use it very lightly as im usually busy at the office. My actual usage time range about 60% of those 10 hours when i use the phone during breaks.
Here are example screenshots of my daily usage:
Here are some details about my configuration:
Brightness set to auto, most of the time at 75% level
Wifi, bluetooth, gps always off
Haptic feedback set to minimum
Mobile data always on and set to WCDMA only, area where im at is usually weak peaking at 2 bars of H and H+ signal strength
Gmail set to push notify
A few apps and widgets set to sync after every few hours(accuweather, flipboard)
Ive been considering getting an extra battery because of this but i really want to make sure first whether i could still do something or whether im doin something wrong thateads to the battery draining too fast.
So please if you have any more tips i could use, please help me out on this.
I thank you in advance.
Sent from my GT-N7100 using xda premium

Also here and additional screenshot to go with the two previous screenshots i posted. It says here ive only had the screen on for 3 hours.
Sent from my GT-N7100 using xda premium

Their battery lasts whole day long. It means that they get 10 hours of screen on time only. Not 24 hours.
Sent from my GT-N7100

Yeah. But in my case the 10 hours is the total life of the battery from the time it is charged until it dies. I'd be lucky if i even get 4 hours screen time out of it.
Do you have an idea why this is so?
Im guessing its because of the weak signal where im at and the fact that i set my phone to search for WCDMA only. Although im not sure whether this is really the culprit. I'll try setting the network mode to auto for now and see if anything changes.
Sent from my GT-N7100 using xda premium

Looks like it.
Try better battery status.
Sent from my GT-N7100

Well after i changed it to auto it improved a bit. Its currently at 14% after 11 1/2 hours with 4 1/2 hours of screen on time. The phone stayed on full edge signal for most of the time (which kind of sucks because internet became painfully slow on edge).
But still, i think this is far too short when compared to those who can get it to more than 24 hours battery and more than 10 hours of screen on time.
Is it possible that i have a defective battery?
Sent from my GT-N7100

Do you have locations services and etc (all 3 options) checked in the maps settings?
I don't get near as good battery life and my phone spends a lot of time awake. This appears to be do to google maps constantly updating my location. I would turn this off, but then i would loose google now functions.
Any help would be great.

BlueGoldAce said:
Do you have locations services and etc (all 3 options) checked in the maps settings?
I don't get near as good battery life and my phone spends a lot of time awake. This appears to be do to google maps constantly updating my location. I would turn this off, but then i would loose google now functions.
Any help would be great.
Click to expand...
Click to collapse
I have only two of them checked(Use Wireless Networks and Location and Google Search). I have GPS disabled. i only turn GPS on when i'm traveling to an unfamiliar place which is not too often.

i got exactly the same problem, whats your firmware?
since i updated the phone to 4.1.2 the battery drains alone, every 8 hours it discharges 25% without using the phone, i am lucky if i get 5 hours of screen. The android os is the one draining all the battery in my phone. On 4.1.1 i could get 7 hours of screen time with 20+hours overall.

yudodis said:
i got exactly the same problem, whats your firmware?
since i updated the phone to 4.1.2 the battery drains alone, every 8 hours it discharges 25% without using the phone, i am lucky if i get 5 hours of screen. The android os is the one draining all the battery in my phone. On 4.1.1 i could get 7 hours of screen time with 20+hours overall.
Click to expand...
Click to collapse
i got 4.1.2.
I can't compare mine to 4.1.1 because when i bought mine it got updated to 4.1.2 after a few hours.
having to charge at least two times a day really negates the otherwise great features of this phone.
I really hope we figure this out. I'll try UtkarshGuptas suggestion using Better Battery Stats and let you know what i find out.

I did they and found Google location services is the culprit.
I'm am referring to the locations services found under location setting in the actual Google maps app. I believe turning of location reporting may disrupt Google now features. Google locations devices is reading out as the main reason for nine consistent partial wake locks on better battery stats.
I'll try turning these features off and awe how it affects battery life and Google now tomorrow.
Sent from my SPH-L900 using Tapatalk 2

battery life sucks on Mine :/

BlueGoldAce said:
I did they and found Google location services is the culprit.
I'm am referring to the locations services found under location setting in the actual Google maps app. I believe turning of location reporting may disrupt Google now features. Google locations devices is reading out as the main reason for nine consistent partial wake locks on better battery stats.
I'll try turning these features off and awe how it affects battery life and Google now tomorrow.
Sent from my SPH-L900 using Tapatalk 2
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Please let us know.

after doin some tests with bbs i found the wakelock is mhl_wakelock,

First off, forget all the battery programs. Factory default your phone and add an apk at a time and use. You'll be able to tell what apk is the problem with a lil testing. Slow process yes but pretty straight forward and to the point. I do have a Note 2 and have no battery issues being rooted and having tons of programs, etc. Basically, I use and abuse my device as per my job and still get a day and a half out of the battery.

People who can get 24hr coupled with 8hr screen time most likely have their phone on low brightness and on WIFI not data.

I got a new battery and its still lasts the same as the other. Yeah it may be because of the mobile data always on that eats up my battery.
Problem is my data connection is my primary internet source i dont always have wifi hotspots. So i might just have to live with the short battery life or learn to turn off my data when i dont need it.
I'll still try looking for other things that contribute to the battery being drained though.
Thanks everyone.
Sent from my GT-N7100

MohJee said:
People who can get 24hr coupled with 8hr screen time most likely have their phone on low brightness and on WIFI not data.
Click to expand...
Click to collapse
I have GPS disabled, auto brightness (but fairly high level) and that improved battery life quite a bit. I then changed kernel to NEAK kernel, reduced the voltage levels for the CPU and that further improved battery life. I can get a full 24 hours on one charge and with normal (?) usage). With the new kernel I can also modify the charging current to a slightly higher level which reduces the time to bring to a full charge.
All in all not too bad but to expect more than 24 hours is unrealistic in my opinion as it is a big handful of electronics!

Not sure what you guys are are doing different. This is my first full month with my note and the battery is a beast. GPS is enabled at all times but all other syncs are disabled. That's just from previous experience. Sync will always drain the battery. So mine is off. I went as far as removing all the extra chargers around my office and home. .now I only need one. And I alsi don't see a need for an extended battery unless I'm going to be away from civilization for a few days. By the way..that was the only time I've killed my battery..kinda. see screenies
--I forgot about brightness- mine is set to 50% and 4G/LTE ..if the device is always searching for it, it will kill your battery. I turn it off at the office as much as I can.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

I get between 6-7 hours of on screen time on mine.
Using dark backgrounds really helped the bettery life for me. I use a dark wallpaper for touchwiz, whatsapp, and also carbon as my twitter client.
Using Perseus kernel also helped because it doesn't ramp up the cpu as high as the stock kernel.
Wanamlite rom.
Brightness set to lowest at home. 25-50% when outdoors.
Two MS exchange emails set to push.
I use wifi all the time unless it's not available I switch to HSPA+. what a waste of a paid data plan
Google now disabled because it's a battery hog. location services kept on though.