Develop Bugs

Battery Life dreadful after ITL41F

Hi Everyone,
I was wondering whether anybody else has experienced this side effect of the ITL41F update? My battery life has been really really good, much better than that of my HD7. I was really chuffed with it. Along comes the ITL41F update, and since then the battery will drain itself on standby. Nothing has changed on my phone. I have not installed any new apps or made any settings changes (such as sync frequency, etc). So the only difference is the ITL41F update.
To give you an idea, If I charge the phone in the late afternoon, and then pretty much leave it alone, by the morning it will have gone down to 15% battery or less. This morning I plugged it in again, and now it's down to 50%. And I only sent a single txt message and didn't do anything else on the phone. This is properly rubbish.
Anybody know where I can report this bug to Google/Samsung?
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Cheers Guys!
Mich

You have a lot of awake time without your screen been on which seems a little strange.
Sent from my Galaxy Nexus using Tapatalk

I would say your mobile signal is using up a lot battery. when it is yellow that means its weak, and grey means no signal. Since this is the main 2 colours on your chart I would say this would be the main reason for your battery drain

Matcarroll said:
You have a lot of awake time without your screen been on which seems a little strange.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
What he said^^^
Something is keeping ur phone awake
Sent from my Galaxy Nexus using xda premium

How would someone go about improving that? My mobile connection is mostly yellow as well. Could APN settings help that? Or would I have to go about flashing a different modem and all that
Sent from my GNex

alias3800 said:
How would someone go about improving that? My mobile connection is mostly yellow as well. Could APN settings help that? Or would I have to go about flashing a different modem and all that
Click to expand...
Click to collapse
Are you seriously asking that question?
You improve your mobile signal but getting your network provider to install another mast, or switch to a different network with better coverage in your area.
If you could improve signal with APN settings or flashing a different radio it would be done like that from the factory!

WEll, I have a LG Optimus One and use franco kernel with it, and am soon buying a GN because he develops for it too, SO:
FLASH FRANCO KERNEL!
DOnate him a beer before and ten after the WOW-experience you'll get when you realise 4 days later that your battery is only 10% becuase of the popup.
And now read my words again.
It's the best option!

Your phone was awake for more than 50% of the time. If you really didn't use it, there's most likely a rogue app which is preventing phone from going into deep sleep.
Use an app like System panel to locate the culprit.

nevermind - delete me

Thanks for the fast replies guys, it's much appreciated! =)
What I find puzzling is that absolutely NOTHING has changed on the phone, apart from the update. So if there was a rogue app that was consuming the battery, it should have exhibited that behaviour before the update, right?
I will check with system monitor though, to see if I can spot something. The strange thing I noticed is that the OS is consuming *more* battery than most other functions. Even on standby.... weird!

After finally getting the patch I can't say the battery has been worse. In fact it seems to be better. Although I think that is down to the fact I've been through a few charge cycles now.

click on android OS, and check out the awake and CPU times. The cpu time should be a fractions of the time awake.
example, my phone has been on this charge for 22 hours (still 36% battery left.. didn't use it too much this charge). the leading battery drain is screen at 51% (2.5 hours awake time), and the 2nd leading item is Android OS which has the following:
CPU Total - 18m 53s
Keep Awake - 4h 46m 9s
I'm just curious on why your CPU total was in relation to the awake time by Android OS.

Mines great.
Sent from my Galaxy Nexus using xda premium

its funny how many similar theads appear everytime a phone gets updated. And most of them all go down to user error.
Just saying. my Gnex is fine after 11F update, OP should probably do a wipe

Guys, I'm not ruling out 'user error', but at this moment in time I cannot see what I could have possibly done to cause it. I have purchased System Panel on the Market and I'm running it in monitoring mode to see if it can shed some light on the issue. Strangely, 'Cut the Rope' and 'Exchange' are running constantly and as a service. Not necessarily consuming CPU while the phone is asleep though. Just though it would be strange for a game to be running as a service? Must be a reason for it....

Ask the developper of "Cut the Rope" why does it need to run that way. Exchange is run as a service because you probably need it.
Anyways, you can try a clean flash with stock ITL41F. But i'd say apps are to blame
Sent from my Galaxy Nexus using Tapatalk.

do you lose root if you update?

tommy96814 said:
do you lose root if you update?
Click to expand...
Click to collapse
Yes, but it's easy to do Superboot again.

mictho100 said:
Guys, I'm not ruling out 'user error', but at this moment in time I cannot see what I could have possibly done to cause it. I have purchased System Panel on the Market and I'm running it in monitoring mode to see if it can shed some light on the issue. Strangely, 'Cut the Rope' and 'Exchange' are running constantly and as a service. Not necessarily consuming CPU while the phone is asleep though. Just though it would be strange for a game to be running as a service? Must be a reason for it....
Click to expand...
Click to collapse
Did you factory reset after the update? If not I realize it sucks to do, but.....that's the road I would venture down.....have yet to own a Samsung that it wasn't almost mandatory to do. Always a battery and sleep issue.
Sent from my SAMSUNG-SGH-I777 using XDA App

No problems here
I'm using this phone on t mobile usa on my battery life is the same just like before the update.

Let's find out what the battery drain is

There's an app called watchdog that I have used in the past to find out what has been braining my battery. It helps you find apps and processes that are using a ton of CPU.
Let's try see if collectively, using this app, we can pinpoint apps or processes that are going haywire.
For this purpose, when you first start the app, you should set it to aggressive. This will alert you when something is using more than 20% CPU at one given time. You can also adjust this to 10% in the options.
I think we have sort of pinpointed it to being a sleep issue, but maybe this can reveal more. Let's get to work!
PS: Real-time CPU will show you instantly what is using CPU on the device. By doing this, however, WatchDog will be at the top of the list since it is working hard to update. Real-Time is cancelled upon closing the app.
Sent from my Galaxy Nexus using XDA App

We know what processes they are. It is several of the kworker processes.

godsfshrmn said:
We know what processes they are. It is several of the kworker processes.
Click to expand...
Click to collapse
Thanks. I have seen these. I was hoping to use this thread to compile a list of apps also causing issues.
Sent from my Galaxy Nexus using XDA App

I got my GNEX on launch day. Have been using it alot and have gone through many charge cycles. When I go into settings and then battery it looks pretty obvious to me whats killing my battery so quickly. Its the screen.
Ive done a search for battery issues and whats really aggravating me is that there are some reviewers claiming 17 hours of heavy use. Thats just ridiculous. I dont get it. I was hoping the phone would kind of sort itself out after a few days but it doesnt seem to be. With my Eris the key to long battery life between charges was to turn off backround data transfer. I dont see this option in 4.0. I do however keep my Wifi, data, and GPS connections off when not in use. I also turned off animations, and added an all black wallpaper to my screen in hopes it may help a little.
Im in to help figure this out if in fact its not just a power hungry screen.

IFLATLINEI said:
I got my GNEX on launch day. Have been using it alot and have gone through many charge cycles. When I go into settings and then battery it looks pretty obvious to me whats killing my battery so quickly. Its the screen.
Ive done a search for battery issues and whats really aggravating me is that there are some reviewers claiming 17 hours of heavy use. Thats just ridiculous. I dont get it. I was hoping the phone would kind of sort itself out after a few days but it doesnt seem to be. With my Eris the key to long battery life between charges was to turn off backround data transfer. I dont see this option in 4.0. I do however keep my Wifi, data, and GPS connections off when not in use. I also turned off animations, and added an all black wallpaper to my screen in hopes it may help a little.
Im in to help figure this out if in fact its not just a power hungry screen.
Click to expand...
Click to collapse
Those that claim 17 hours of "use" are either GSM users or Verizon users that switched to CMDA instead of LTE. and even then I hardly doubt its heavy use

That doesn't explain why battery life is so low on wifi I have a sprint photon 4g fully loaded, which drains around 5%/ hour while idle but with background apps (ie gmail )
I only have a subset of those apps in my nexus galaxy and it drains closer to 10%/hour while idle.
Both on wifi.
One thing that I've noticed is that the galaxy nexus barely spends any tine in deep sleep. Using CPU spy (available in market - great app btw ) I can see that the nexus has spent only 7% of its time in deep sleep over the past few days - and a majority of the time in 350mhz mode.
My photon was closer to 25-50% (depending on usage )
Sent from my Galaxy Nexus using Tapatalk

on mine, i found out that using the large "interactive" twitter widget (the one you can scroll left and right through tweets) absolutely killed my battery and prevented phone from sleeping. the small twitter widget (where it just shows most recent tweet) doesn't have that issue.
I didn't have that issue using the large twitter widget in android 2.x but it definitely prevents my nexus from sleeping. I'll bet other apps/widgets have similar code that prevent phone from sleeping.
the large twitter killed battery on wifi, 3g, or LTE. as soon as i took it off home screen and rebooted, my battery life was solved.
w/ large widget: lost 25% battery in 1 hour
w/small widget: lost 25% battery in 8.5 hours

I've never had any issue with my phone going into deep sleep with any ROM or Kernel. However with any based off 4.0.1 battery drain during deep sleep was pretty bad. Starting with 4.0.2 i'll only lose 4% or so overnight. We'll see about 4.0.3 over the next couple days.

Man, it is a tough situation to accept if you're coming from the Atrix. At the end I was getting between 7 and 9 hours of screen time. Hopefully CM9 will be taking care of a lot of all that. Really though? Doubt it. 4,7" über-amoled screen. It's bound to fry the battery straight through..

diomark said:
That doesn't explain why battery life is so low on wifi I have a sprint photon 4g fully loaded, which drains around 5%/ hour while idle but with background apps (ie gmail )
I only have a subset of those apps in my nexus galaxy and it drains closer to 10%/hour while idle.
Both on wifi.
One thing that I've noticed is that the galaxy nexus barely spends any tine in deep sleep. Using CPU spy (available in market - great app btw ) I can see that the nexus has spent only 7% of its time in deep sleep over the past few days - and a majority of the time in 350mhz mode.
My photon was closer to 25-50% (depending on usage )
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
Are you talking about when the phone is in standby overnight, or during normal day usage?
My deep sleep time is at 69% in the last 15 hours.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
15 hours = from 10:23PM last night to 1:23PM today. I was sleeping from 12:30PM - 7:15PM (phone was charging).

i have a quick question.. dont know if it is off topic... but..
in developer settings it has a option on how many processes to keep... standard limit down to keep only 4... but for some strange reason i always have to reset it to 3 if i turn off my phone... doesnt it not remember these settings?

Mine is only 7% over a 24 hour period. Including charging overnight. Are you on wifi?
Sent from my MB855 using Tapatalk

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:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

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.

Wifi draining a lot of battery

I m using domination HD ROM. But have used kernelpanic as well I found this problem in both the ROMs wifi takes a lot of battery juice and when I am using the phone wifi keeps getting disconnected and connected. Is it a known issue?
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my nitro hd using tapatalk

I'd day it is normal. It isn't actually sucking up much power. Mine is at 65% and my battery is still almost full.

Is that so ? How many hours after it's plugged off the charger? I fully charge my cell and if I keep wifi on in the night. in the morning it comes to around 80 percent in 7 hours
Sent from my nitro hd using tapatak

7 hours, was still at 90%. Had it on all night by accident. Wifi becomes negligible when I begin to use other apps. Any game outweights my wifi really quickly. Anyway to see exactly how much drain an app has aside from the "about phone" "battery use"?

Now, please, screenshot of 8 hours with wifi off. Then we'll talk

I use systempanel app for it. it doesn't show wifi drawing a lot of battery juice though. But still do you notice wifi keeps getting disconnected?
Sent from my unlocked rooted Nitro HD using tapatalk

[email protected] I will put that screenshot tomorrow morning then means after 11 hours

Screens with wifi off 8 hrs 18 display on still at 94 battery
Sent from my unlocked rooted and Nero HD using tapatalk

Quiet impressive. My guess is you have not much installed there, no push mail, no weather, nothing like this?
The signal strength seems to help this as well.
My phone left during night with wifi on, cell signal at 2-3 bars (although I can see the cell tower from my window 3 block away), plugged into computer in sleep mode (which for some reason doesn't charge the phone), in the morning after 6 hours leaves about 80-85%. But I do have 3 push mail boxes, weather, news and gps enabled.

btw have you noticed that the temperature is always generally above 35 degree C. even when the outside temperature is below 15 and the device is untouched for hours.. in the screenshot.. temperature shown is 32 while the outside temperature was about 15. and it was taken in the morning after untouching the device for 7 hrs.

Have you seem something like this in your battery consumption
Sent from my unlocked rooted Nitro HD using tapatalk

Anyone got any idea what is draining my battery sooooo fast? I've had strong signal all day, for the most part minimal brightness..turned wifi of when not in use, didn't even play any games today... I left the house at 8:30 and it was dead at 6:45, before I even got home. Also, only made one short official today.
Sent from my LG-P930 using XDA App

The built in LG apps are known to eat up the battery. If you are rooted, you can use NoBloat to disable these applications.
Here is a website that has a list of the applications that are safe to disable: http://androidadvices.com/optimize-lg-nitro-hd-phone-performance-removing-bloatware/

I'm not gonna lie, I'm scared to root it. This is my first Android phone.and if I screw it up I won't have a phone for quite some time.
Sent from my LG-P930 using XDA App

I understand your fear, but if you read the directions closely and go slowly the likelihood of bricking the phone is small. Rooting by itself isn't too dangerous - the dangerous part is loading CWM and ROMs, and the risk will be greatly reduced when (if) we get CyanogenMod for our phones...

After CM9 came over to our Phone still Wifi takes a huge percentage of battery drain and usage. I have seen my frens Galaxy nexus and his wifi was on for 10 hrs still it was taking 3% of battery . in our case it would take more than 20% if its on for 10 hrs

I am on CM10 now and WiFi is still the biggest battery drainer by far..
on other phones typically the screen was using the most battery. WiFi is typically battery efficient.
My phone went from 95% - 68% with WiFi on (but not using it) AND while on airplane mode.
There is some issue with wifi drivers

Post Battery Life Here

Just curious to see what everyones battery usage is like. I'll post mine tonight after my battery drains down
Sent from my SAMSUNG-SGH-I747 using xda premium

jdbeitz said:
Just curious to see what everyones battery usage is like. I'll post mine tonight after my battery drains down
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
I charged it up during the day yesterday, but then hammered it syncing my emails, sms messages and other things.
So, last night was my first real charge. I took it off the charger at 6am this morning, and right now, at just a few minutes less than 5 hours, I'm at 83% with 70% use being cell standby.
I'm sticking with HSPA+ today, because I know that will drain the battery more than WiFi (at least that was the case on my Atrix) and I'm trying to get a feel for the battery life when away from WiFi.
Now, full disclosure, my phone has 6 email accounts setup for push. An Exchange account, two Gmail accounts and three Imap idle accounts using k9 mail. Still, I would say it's burning battery at a little higher rate than my Atrix with those same six push email accounts.

5 hours and down to 40%.
:-(

I'm seeing a significant increase in battery life whith the s3 over the s2
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my SAMSUNG-SGH-I747 using xda premium

I'm a bit of a light user, but a little heavier than average given new phone.

7.5 hrs @ 57%.
I'll post screens when I can.

5 Hours, 45%, screen on 2 hr, 12 min.
Interesting thing: I have a Pandora Widget on my screen, have not used it at all, and 13% of my power, and show son for 22 min.

9.5 hrs @ 29%.
I am using the default juicedefender profile.

Cell standby hogs the battery more than other phones like US One X with same SoC. I think kernel devs can work on this since this is not normal.

To get a good idea on battery life, everyone needs to show their screen on time as it should be the biggest drain.
Sent from my HTC One X using Tapatalk 2

This is on power save mode.
Sent from my SAMSUNG-SGH-I747 using xda premium

^^ I had power saving off for the first 3 hours of the day, and screen was set to 1/4 brightness. I changed screen to auto brightness, disabled wifi network scanning/notification, turned on power saving mode (all options), and it's been like that since about 3 hours into the day. I've done some driving with Slacker Radio streaming via bluetooth to my Jeep.
Seems like cellular standby eats juice. I am in an LTE area.

is the a way to turn off LTE?

This is mine so far, don't really run any battery saving appsetc. Cell standby is a bit too much.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Heavy usage today including a 30 minute trip in the car using gps and lte im at 42% right now
Sent from my SAMSUNG-SGH-I747 using XDA

420SYN said:
is the a way to turn off LTE?
Click to expand...
Click to collapse
this.
op said he just ran on hspa+ so there must be a simple way to do it

jdhommert said:
this.
op said he just ran on hspa+ so there must be a simple way to do it
Click to expand...
Click to collapse
I haven't seen a way to switch. The person in question is probably in a market without LTE like I am and is stuck on HSPA+

so battery life is wayy better on the exynos...
Sent from my SAMSUNG-SGH-I717 using xda premium

I went to work yesterday at 4:30pm and showed people my phone all day as well as had the screen on the entire time for my lunch. Got home at 11:45pm and my battery was at 91%. This is on LTE the entire time also. My Nexus was usually at 60-70% by the time I got home.

Zacisblack said:
I went to work yesterday at 4:30pm and showed people my phone all day as well as had the screen on the entire time for my lunch. Got home at 11:45pm and my battery was at 91%. This is on LTE the entire time also. My Nexus was usually at 60-70% by the time I got home.
Click to expand...
Click to collapse
are you rooted? cause 91% left and you had it on for about 7 hours??? that's damn good. where you running any apps?