Develop Bugs

Greatly improved battery life (CDMA)

Last night I restored my phone using the factory image. For some reason I anticipate an OTA soon so I wanted to be ready. Anyhow, before I suffered from the battery drain bug. I forgot to charge my phone last night, and didn't realize it until I got in my car and put it on the car charger and it said 89%. My first thought was that my battery drained over 10% in the hour I was getting ready and not using it! Then I went into battery settings and found out I never charged it.. then I found some pleasant... well, I'll just show you.
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As you can see, I lost less than 5% battery during the 6+ hours my phone was unplugged. I had the phone in the living room charging while watching a movie. Then I unplugged and used it for about 20 minutes in the bedroom which accounts for the first rapid drop in battery. But after I set it down, the phone went into a coma. And I can't see exactly, but it looks like it was only 2 or 3% which is great!
Not sure what changed, I still have the same apps installed, even Facebook. I did, however, NOT disable VZ backup assistant like I normally do. Maybe that is what causes the OS to go bonkers? Thoughts?
Sent from my Galaxy Nexus using XDA App

I got about 20 hours out of mine yesterday (extended battery) with moderate usage (texting, ebay, facebook, web) This is after unlocking the bootloader and rooting. Unlocking the bootloader resets the phone to factory state. I've read a few other posts around the web where battery life is greatly improved after a factory reset. Android OS is still the main things devouring my battery, but I almost don't care with the performance I'm getting. I should also mention that I wiped battery stats from CWM and then calibrated the battery on first charge.
I'm no dev, so I don't know why a reset would help. Then again, maybe it was wiping battery stats and calibrating that helped me. Just my $.02

How did you calibrate the battery?

There's a free tool in the market that will calibrate for you. Have to be rooted though. Just search for calibrate.
Sent from my Galaxy Nexus using XDA App

Surprised this isn't getting more acknowledgement. Any one else experience the same after a reset?
Sent from my Galaxy Nexus using XDA App

Guess maybe I'm one of the lucky few...I've always had this type of battery life. The phone just sips power while the screen is off.
While it is on...well that's different. I keep the brightness high and get about 2-2.5 hours of screen time before it powers off.

The interesting thing here is that it seems that you have the Android OS constantly waking up the phone but yet it still barely uses battery.
Do you have location services turned on or off?

Turned on. I noticed that too but the overall awake time is low. Usually it would be over half of the entire time on battery, sometimes 100%.
Sent from my Galaxy Nexus using XDA App

I used 50% in about 3 hours on my extended battery.
fml.

Great battery life, but you didnt really use your phone much.
Your "Screen on" is only about 15% of those 6 hours. Which ends up being about an hour.
Still, none the less, great battery life/power consumption.

rpnunez said:
Great battery life, but you didnt really use your phone much.
Your "Screen on" is only about 15% of those 6 hours. Which ends up being about an hour.
Still, none the less, great battery life/power consumption.
Click to expand...
Click to collapse
I think you missed the point. I said this was done while I was sleeping. Many people are experiencing extreme battery drain even when they aren't using the phone, as was I. After restoring from the factory image, my issue seems to be gone.
Sent from my Galaxy Nexus using XDA App

kangxi said:
I think you missed the point. I said this was done while I was sleeping. Many people are experiencing extreme battery drain even when they aren't using the phone, as was I. After restoring from the factory image, my issue seems to be gone.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
I unplugged my phone at 11:30 pm with 98%, woke up at 7:30 am today and it dropped to 76%. So a 20% drop in 8 hrs with the phone just sitting there with wi-fi on and no apps running. It'd be very interesting to see if a factory restore would help.
How's the battery life now that you're using it?

Im thinking of unlocking and rooting mine tonight. havent had a moment to read the walkthrough just yet.

i noticed this too last night/today. i went to sleep after installing bugless beast 4.0.3 cdma, left it off the charger, and today i saw the chart was pretty much a flat line. i don't recall the exact times, but i'll try to time it out. about 8 hours
i wonder if all the initial extreme battery drain reports are due to the 'wowanewphone' effect, where you are molesting your phone 24/7, as opposed to the typical day-to-day use you'll eventually fall back into

Getting GREAT battery life with new ROM (Lost just 20% in 16 hours)

See here: http://forum.xda-developers.com/showthread.php?t=1361108
Lost just 20% in 16 hours. This is of course with JuiceDefender and airplane mode scheduled to run over night. But it's still impressive as we used to get battery drains even at times phone was supopsed to sleep and AirPlane mode on.
My baseband is UGKK7, but that's not what cured it, I had this baseband installed days earlier and battery drain was awful.
In my case it appears all battery problems are cured:
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What's your standby current draw? In my HD2 android, I had about 4-9ma. But in Galaxy Nexus it's about 19-40ma which is pretty high. Judging from your screenshot, yours is 16ma in standby?

Possibly, I have no idea. Nexus is known from high default cpu voltage, maybe thats that or maybe it's my apps waking phone every now and then to check things, for example LED light notification app or Juice Defender.
Anyway, I'm pretty happy now, might tweak it some more when I have time, but it's now at the same level as my old SGS2, I'd say a bit better (I think I had 5% night drop on AirPlane mode on SGS2, but again it depends on apps).

luffyp said:
What's your standby current draw? In my HD2 android, I had about 4-9ma.
Click to expand...
Click to collapse
Just checked: it was constant -5mA throughout the night.

Have you, knowing you want to see good results, un-knowingly played less with your phone on this rom?
Sent from my Galaxy Nexus using xda premium

Tjotte said:
Have you, knowing you want to see good results, un-knowingly played less with your phone on this rom?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
That's not it, I know battery will go down when I actively use it. What I noticed is that I get great results when phone is idle. This didn't happen before, you would see battery drain even when idle at night in AirPlane mode. This means light use should also give better battery performance than before, I will be testing that.
Sent from Galaxy Nexus using Tapatalk

This is with Google+ and Facebook signed in. I just disabled all notifications from these apps and they appear to function properly, do not keep awake when not run.

schriss said:
This is with Google+ and Facebook signed in. I just disabled all notifications from these apps and they appear to function properly, do not keep awake when not run.
Click to expand...
Click to collapse
I dont know what I did but while IDLe, I get about 1% drain per hour, thats on 3G, sync on (gmail, google+, etc), no juicedefender or airplane mode.
I only tested it overnight, when Im sleeping, notice the ZERO wake locks and crappy signal; unbelievable!
Disclaimer: this was while I was sleeping, NO usage. Battery obviously goes down much quicker once the screen is on, but for idle time, I am content!

schriss said:
That's not it, I know battery will go down when I actively use it. What I noticed is that I get great results when phone is idle. This didn't happen before, you would see battery drain even when idle at night in AirPlane mode. This means light use should also give better battery performance than before, I will be testing that.
Sent from Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
ok, thank you keep on testing and keep us informed, always nice to get some info! Merry X-mas!
Sent from my Galaxy Nexus using xda premium

thats great to see how long it lasts while youre not using the phone... but how about while youre actually using it?

voxigenboy said:
thats great to see how long it lasts while youre not using the phone... but how about while youre actually using it?
Click to expand...
Click to collapse
For real... All these people posting up 15-20 hours of battery by putting it on airplane mode overnight is just useless info. Especially when most people put it on the charger overnight
Sent from my Galaxy Nexus using XDA App

Happy! said:
For real... All these people posting up 15-20 hours of battery by putting it on airplane mode overnight is just useless info. Especially when most people put it on the charger overnight
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
It is not useless info. Previously, when putting in AirPlane mode and not using the phone at all we would see big battery drain. Now we don't. This is to proove that now the phone actually goes to sleep whenever I don't use it. This is proper testing before and after applying one change.

voxigenboy said:
thats great to see how long it lasts while youre not using the phone... but how about while youre actually using it?
Click to expand...
Click to collapse
I will know next time I go to work. But since I never use it for all these 8-10 hours straight, I should have better battery, because whenever I will put the phone away, even for another 15mins, battery will stop dropping like it used to.
In other words, it will most likely still drop as usual while actively using the phone, but in overall I should get more battery because of much more efficient idle times.

My battery life BLOWS (ext batt. LTE Nexus)

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I'm using an LTE Nexus with the official Sammy ext. Battery, yet my battery life is ****. After playing temple run for about 30min in total over a typical class day and tethering for 10min, my battery is down to less than half already. Is there something I'm doing wrong?
Running on leaked 4.0.4 with latest FrancoKernel.
Sent from my Galaxy Nexus using Tapatalk

Well its not great either way, but the screen on and awake time in that screenshot looks more then half an hour. Looks at an estimate to be nearer an hour and a half which is a total screen on time of about 3 hours which is fair.
Sent from my Galaxy Nexus using XDA

Pretty normal if you ask me.
Gesendet von meinem Galaxy Nexus mit Tapatalk

That's well over 30min of screen on time, and with a bad signal at the end that drains.
Doesn't seem super out of the ordinary, honestly.

In total I'd say my phone was playing Temple Run for 30-40 mins, and then frequent on-and-off with google talk and text messaging. I don't believe what its saying for the screen on is true, because it definitely looks to be on more than 50% of the time, but in reality I haven't used it more than 50%.
Are there apps that can be running in the background that's making my Nexus think that the screen is on?

al2x said:
In total I'd say my phone was playing Temple Run for 30-40 mins, and then frequent on-and-off with google talk and text messaging. I don't believe what its saying for the screen on is true, because it definitely looks to be on more than 50% of the time, but in reality I haven't used it more than 50%.
Are there apps that can be running in the background that's making my Nexus think that the screen is on?
Click to expand...
Click to collapse
No. The screen on time will be precisely (as much as it can be) displayed in that settings menu.

Why don't you put your phone down and pay attention in class?
That seems to be a big battery issue on XDA, people complain but they refuse to put there phone down for more than 5 min.
Sent from my Galaxy Nexus using XDA

Too busy complaining on xda and waiting for a solution while screen is on.
Iphone. Helping computer illiteracy get popular since 2007.

killyouridols said:
Well its not great either way, but the screen on and awake time in that screenshot looks more then half an hour. Looks at an estimate to be nearer an hour and a half which is a total screen on time of about 3 hours which is fair.
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Click to collapse
Yup, your info shows lots of screen on time and hammering the processors with playing games.
And the LTE network takes a larger toll on the battery compared to GSM/HSPA.
The stock 1750mah hour battery is only good for maybe 5-6 hours of screen on gaming hammer time. With more modest normal voice/data usage the battery can go 24-48 hours.
USB chargers are easy to keep around. Bigger fatter 3300mah batteries are another option.

mototireguy said:
The stock 1750mah hour battery is only good for maybe 5-6 hours of screen on gaming hammer time. With more modest normal voice/data usage the battery can go 24-48 hours.
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lol.... not on the LTE model.

I hate to say it but it must be something you're doing with your setup my battery is awesome re look at your set up and see if you have something running in the back ground..
Sent from my Galaxy Nexus using Tapatalk

Whats your screen on time? On light usage days normally my nexus looks exactly like that, down to the percentile of apps. Its judt that the days that I do want to use my beautiful phone... it lasts for ~5 hrs maximum, plus get hot as a mofo.
Sent from my Galaxy Nexus using Tapatalk

I have battery life that bad when I'm in the office, but I think it is because I have very light service...not enough service that it is totally usable, but just enough that the phone keeps trying to establish a connection...

Click on display in the battery usage to get your screen on time.
Expect 2-3 hours of screen on time with the LTE Nexus.

As others have said, check your screen on time. Just to clear something up the % listed next to the object in the battery menu tells you the percentage of the battery used, not the overall battery. For example, 50% used by Screen, and the battery level is at 30% means that the screen roughly used about 35% of the overall battery, not that the screen used 50% of the total battery.

iphone 4s dont have that kind of problem.

My maguro with the 2000 mah battery lasts all day with half a charge still left over with AOKP/Franco kernel, undervolted and hotplug mod.
I'm usually on wifi though, since I have wifi at both work and home. That definitely helps a lot.

zeke1988 said:
iphone 4s dont have that kind of problem.
Click to expand...
Click to collapse
While I'm guessing you're trolling, I'm just gonna say 3.7 inch screen and 3g will help one out greatly with battery life

3.5 actually and you also have to factor in the way it multitask

cordell507 said:
3.5 actually and you also have to factor in the way it multitask
Click to expand...
Click to collapse
or rather lack there of, iOS does not have true multi tasking.

[Q] Pathetic Battery Life, even with 3800mah extended battery. WTF?!?

This is irritating me immensely...my Galaxy Nexus has yet to last me a full day on a charge. I bought a Hyperion 3800mah battery and I believe it really did extend my battery life. On Sunday, I was home all day and my phone was connected to wifi. I used it quite a bit and the thing had 80% when I went to bed.
Today and yesterday, going to school, my phone is just about dead when I get home, at 2:30. I did use my phone, but not heavy at all. Spent the most of the day in my pocket. I had nothing on both days. No bluetooth, GPS, I had sync off when I went to school today, then I turned it on around 1 o clock or so. I used full screen brightness when I was outside for a few minutes, otherwise it was on low. The thing is warm to the touch like its been running frantically. I'm lead to believe that its something to do with the LTE radio. But what??
Took some screen shots of my battery page, had 4% left.
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Please please please help me. I've read people getting 2 days on a charge with a 3800mah battery...I'm drooling for that ability.
Thanks!

It looks like your spending lots of time in area's with bad reception. I'm using the sedio 3800mah and I have no problem going several days on one charge. Only time it drops faster is when I have crappy reception and the radio's are pulling more juice. On heavy days I have wireless tether running all day, and a couple hours of games and still have 40+ percent at the end of the day.

there is also some crap app installed that keep ur phone awake..
ur phone should be awake only when the screen is on (or so)..

your high % of cell standby should give it away.

look at your signal the red is all the times with no signal meaning that whole time the phone is searching for signal. plus 49 %of screen on time that looks to be half of 7:49 so almost 4 hours of scren time is good just need to fix your signal problem plus draw something kills your battery as well

lordgodgeneral said:
It looks like your spending lots of time in area's with bad reception. I'm using the sedio 3800mah and I have no problem going several days on one charge. Only time it drops faster is when I have crappy reception and the radio's are pulling more juice. On heavy days I have wireless tether running all day, and a couple hours of games and still have 40+ percent at the end of the day.
Click to expand...
Click to collapse
+1 to signal causing drain
Sent from my ADR6425LVW using XDA

dco717 said:
plus 49 %of screen on time that looks to be half of 7:49 so almost 4 hours of scren time
Click to expand...
Click to collapse
is not like that..49 % is the power consumption of the screen in relation to the other things that drained the battery..with easy word, you cant know the screen on time if he doesn't say u

True...well he needs to do a factory reset and see if it helps
Sent from my Galaxy Nexus using XDA

Wow, poor to no reception, high awake times, high screen on times...it's a miracle your battery lasted as long as it did.

dco717 said:
True...well he needs to do a factory reset and see if it helps
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
Factory reset doesn't help bad signal...lol.
Turn off LTE, bad signal will drain you fast but bad signal on LTE will drain you twice as fast.

Looks like you have a rogue app. See how much your phone is awake when the screen is off? That combined with bad signal=dead phone.

I see what you guys mean about awake mode. Yea my phone feels like a warm coal all day. I uninstalled "Words Free" because I've heard bad thing about battery, I stopped using the beautiful widgets weather app, stopped sync with soundcloud, and I got an airplane mode widget for the bad reception area. We'll see how long I can stretch my battery tomorrow.
I read up on how Light Flow light might drain the battery. The LED light has remained stuck on a lot, so I uninstalled it. I'll post a battery stat tomorrow night. Fingers crossed.

I can vouch for bad reception draining the battery.. that should clear up your problem.
Sent from my Galaxy Nexus using xda premium

I had the same problem but get this app called "2X Battery", my batter lasts the whole day now! Get the PRO version, its actually worth it and it works wonders!
I have the extended battery also

yep bad reception... once time i left my phone one in my bag while on an airplane... not in airplane mode or anything... battery went dead in about 2 hours due to no signal

Pretty sure the bigger problem is the phone waking up while the screen is off. You should run your phone for another day and look at the list of apps that are draining your battery.
A few good things to look for? Google + or other programs constantly checking for messages your location, or updates, e-mail being pushed to your phone automatically, Wifi on while in sleep, and widgets.

My battery is **** also on GSM version my galaxy s2 would have 2-3% drain per hour most time less Nexus seems to drain 2-3% in 15mins its terrible wish i never changed.

[Q] Insane battery life, is this normal?

Is this normal, an hour of web-browsing with screen on auto-brightness and phone drops from 100% to 71% ? Wifi was off, bluetooth on but not connected to anything. I have Better Battery Stats too, shall I post up? On stock ICS.
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with my experience with ics the first discharge is usually terrible but after a few charges battery life becomes better.
Sent from my SGH-T989 using xda premium

are you using wifi? if so yes

G1_enthusiast said:
are you using wifi? if so yes
Click to expand...
Click to collapse
He said the wifi was off, please read people.

not sure if "insane" means bad or good. But it looks about average. The average screen on time ranges from 3.5 to 4.5 hours. Mine is dead center of that.
Bluetooth not connecting to anything still drains a lot because it is constantly scanning for other bluetooth devices.
BTW your reception is in the YEllow. that means that also leads to battery drain.
So if you have better reception and your bluetooth is off then your battery would last longer.
Note: I use bluetooth a lot and I find it to be one of the biggest factors for draining. more than GPS and Wifi. Although, using wifi with strong signal actually saves battery.

Teo032 said:
The average screen on time ranges from 3.5 to 4.5 hours. Mine is dead center of that.
Click to expand...
Click to collapse
I really doubt that, because I did the same battery test Techradar* does, which is:
screen on full bright
Wifi on
Gmai, FB, etc all set to update as often as possible
Run a 1.5 hour long HD video full screen
At the end of that test I was at 84%. (the Video was on my SD card, not streaming)
In the video they have a graph of their stats for different phones using this test. GS2 and GS3 are top 2.
http://www.techradar.com/reviews/ph...laxy-s3-1078667/review/page:14#articleContent

96shox said:
I really doubt that, because I did the same battery test Techradar* does, which is:
screen on full bright
Wifi on
Gmai, FB, etc all set to update as often as possible
Run a 1.5 hour long HD video full screen
At the end of that test I was at 84%. (the Video was on my SD card, not streaming)
In the video they have a graph of their stats for different phones using this test. GS2 and GS3 are top 2.
http://www.techradar.com/reviews/ph...laxy-s3-1078667/review/page:14#articleContent
Click to expand...
Click to collapse
You're doubting that our phone doesn't last that... Uhh.. Short? I've had this phone since December and had many discussions with others on here about it and we agree that 4 hrs is about right.
So with that test you're saying that our phone can get over 6 hours throughout the say with normal use? Highly doubt it. You have to realize a couple things.
1. Wifi consumes less battery than 4g
2. You should factor in a normal days use that means including idle time i would say about 2% per hour maybe less.
3. Watching a movie means no "touch" interactions which means it consumes less battery than Web browsing or playing games.
So yes if you just leave the phone on the entire time without touching it. It'll last a long time. But with actually interacting with the phone and using 4g data. Most gets 4hr. Screen time in 17 hours of use ( you guys do get 7 hours of sleep right?)
I don't really believe that test. I know that the 4s battery sucks balls. Our phone lasts longer with our 4g on. It is saying that the one x is shorter?? One x and s lasts longer than our phone. So yeah.
Sent from my SGH-T989 using xda premium

Very normal to me.

96shox said:
Is this normal, an hour of web-browsing with screen on auto-brightness and phone drops from 100% to 71% ? Wifi was off, bluetooth on but not connected to anything. I have Better Battery Stats too, shall I post up? On stock ICS.
Click to expand...
Click to collapse
You obviously haven't met the DARKSIDE...

Teo032 said:
You're doubting that our phone doesn't last that... Uhh.. Short? I've had this phone since December and had many discussions with others on here about it and we agree that 4 hrs is about right.
So with that test you're saying that our phone can get over 6 hours throughout the say with normal use? Highly doubt it. You have to realize a couple things.
1. Wifi consumes less battery than 4g
2. You should factor in a normal days use that means including idle time i would say about 2% per hour maybe less.
3. Watching a movie means no "touch" interactions which means it consumes less battery than Web browsing or playing games.
So yes if you just leave the phone on the entire time without touching it. It'll last a long time. But with actually interacting with the phone and using 4g data. Most gets 4hr. Screen time in 17 hours of use ( you guys do get 7 hours of sleep right?)
I don't really believe that test. I know that the 4s battery sucks balls. Our phone lasts longer with our 4g on. It is saying that the one x is shorter?? One x and s lasts longer than our phone. So yeah.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
well i guess that test is to show the efficiency of the screen.

Rob4828 said:
with my experience with ics the first discharge is usually terrible but after a few charges battery life becomes better.
Sent from my SGH-T989 using xda premium
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Click to collapse
I have to agree. Mine did exactly the same. After the 3/4 day battery life started to improve very noticeably. :good: