Database Users

My Android OS drain culprit -

Edit: just so u know that that the process irq/325-k3g is causing the android os issue. Once again this process is only visible in the free app osmonitor. I let it run wild for couple of hours and it drained my battery excessively and also made android os go up to 50% battery usage. So it seems the culprit for the android os drain is process irq/325-k3g.
The process is just showing consumption when the drain happens and NOT all the time. So if u see your battery dropping quickly have a look to see if the process is consuming CPU . /Edit
Right, so ive observed lately that when my battery starts dropping % quickly that a process called irq/k325-k3g is consuming a lot of CPU.
This is only visible with the app osmonitor under process.
This randomly happens and seems to be triggered by the stock browser.
If the process kicks up it won't stop on its own, I can't stop that process in osmonitor and thus causing excessive battery drain cause it continousely uses cpu. The only way to stop this process is by killing internet (browser.apk).
I had the same problem on all roms I've tried so maybe someone else suffering from this find this helpful.
This doesn't solve the root of the problem but atleast its a temp fix.
Any feedback appreciated.
Sent from my GT-I9100 using Tapatalk

i feel your pain , i am getting almost 10% drain per hour

So nobody experiencing battery drain caused by the above process?
Sent from my GT-I9100 using Tapatalk

The problem is that everyone is quite about this problem. Battery life is rubbish and no one is putting forward any advice or detailed fix for the problem.
So back to your solution mate, does this process work when you use opera mini? I never use the stock browser.
Kind regards,
Sul

A coworker showed me his SGS2 today : uptime 2days 23h and still 39% battery remaining..
config :
1) No airplane mode
2) No wifi at all
3) No gapps autosync
4) No task killer
5) some phone calls (20 minutes), a few sms and browsing. A little gaming too..
I have the same config : but poweroff after 1d and 6 hours...
irritating

I've had 2 different units and found the battery life to be awesome on each one. I'm wondering whether users previous handsets are coming in to play i.e. are they coming from Blackberrys or old Nokias?
Quietness on a certain issue tends to point to most people not suffering from it.
Regards.

MoxFulder_CH said:
A coworker showed me his SGS2 today : uptime 2days 23h and still 39% battery remaining..
config :
1) No airplane mode
2) No wifi at all
3) No gapps autosync
4) No task killer
5) some phone calls (20 minutes), a few sms and browsing. A little gaming too..
I have the same config : but poweroff after 1d and 6 hours...
irritating
Click to expand...
Click to collapse
why he did not got a usual phone .
The problem is the huge battery drain in idle mode , i had a galaxy s before the drain was 1.5% per hours now i am getting 8-10% per hour
a non sense

To be honest I thought my battery life on my Nokia N900 was crappy, max 2 days, usually though 1 1/2 days but coming on to my first Android, battery lasts me less than 17 hours on average lol
I was surprised, I was expecting more actually considering it is a more mature OS than Maemo, might have better battery management. Guess I was wrong haha.
That said I keep my phone charged to my PC when ever I am at work so it doesnt really bother me much.

Ever thought that maybe you've all got an awesome phone, maybe just playing with it quite a lot more than you would have any other phone.
I know i am, but when i had a day off playing it lasted 2days with 37% left.
Sent from my GT-I9100 using XDA App

Sorry guys, this thread is about some rogue system process that causes battery drain, possible triggered by the browser, very specific issue.
so please lets not turn this into a typical "my battery is bad/good" thread.
Sent from my GT-I9100 using Tapatalk

All I can say is a factory reset doubled my battery life and fixed my problems

An explantion by a google engineer for the battery drain issue:
Comment 297 by [email protected], Apr 7, 2011
A problem has been identified in the driver for the wifi device on the Nexus One (bcm4329). The problem can cause the phone to repeatedly enter its suspend state and immediately wake up, resulting in a severe degradation of battery life. The problem has only been observed on Nexus One running the Gingerbread updates to the wifi driver and device firmware, although the driver is used in other phones as well. A fix is in the works, but I don't have information on a release at this time.
Turning off the wifi device, or modifying the wifi sleep policy to never sleep, may avoid the problem in the meantime.
http://code.google.com/p/android/issues/detail?id=15057#c297

Locster126 said:
Sorry guys, this thread is about some rogue system process that causes battery drain, possible triggered by the browser, very specific issue.
so please lets not turn this into a typical "my battery is bad/good" thread.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Good luck..... I'll drop in when the thread has hit 10 pages of random battery chat and try and find a mention of the relevant process!
Seriously though, I'll keep an eye on the process and see if I notice what you say in the OP.
Regards.

Here is a more exhaustive explanation:
Comment 261 by [email protected], Apr 20, 2011
@nsbu: The message about "'uart_clk' not off" looks alarming but is actually harmless -- this clock doesn't prevent the SoC from suspending, and this message always appears at suspend time in Android kernels running on Qualcomm MSM chipsets. (If other clocks were listed here then those could represent a problem.)
Similar to a previous report on a T-Mobile myTouch 4G discussed here, the data logged on wakeup reasons needs to be interpreted by the OEM that has the hardware specs for the phone and the Qualcomm radio firmware source that generates some of that info. HTC is the OEM for that phone; their support site is http://www.htc.com/us/support . Or try the T-Mobile support site at http://support.t-mobile.com/viewAllProducts.html , they seem to sell this device under their own brand.
In case anyone's confused, it's recognized that some phones do have battery life problems that stem from: (a) not properly suspending to low-power states and, (b) continually attempting to suspend and resume, burning CPU in the suspend thread. The causes tend to be due to devices continually generating interrupts (that might not be properly handled by device drivers and hence continue to be generated), or drivers rejecting suspend for conditions that should be short-lived but instead persist for long time periods. In many cases the drivers involved are written by OEMs and Google does not have any knowledge of the drivers or devices causing the problem -- the folks who made the phone need to take a look.
Problems with the Google Nexus One described in another issue referenced in previous comments fall in the same category, and in that case we have the hardware and the design info needed to diagnose the problem (wifi driver interrupt handling problem), and a fix is on the way.
http://code.google.com/p/android/issues/detail?id=11126#c261

Well, for me the battery is good. I don't use phone much for gaming and surfing but there are a lot of calls, maybe 3-4 hrs of call time or more. Also I keep quitting running services like social hub, voice command etc.
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yudi7 said:
Well, for me the battery is good. I don't use phone much for gaming and surfing but there are a lot of calls, maybe 3-4 hrs of call time or more. Also I keep quitting running services like social hub, voice command etc.
View attachment 625221
Click to expand...
Click to collapse
Voice calls isn't a way to check your battery life. As soon as you hold the phone near your ear, screen turns off. For proper checking, you have to surf internet via Wi-Fi/3G, play Games, watch Movies etc..Just keep the screen on. I think if you even talk 6/7 hours per day (and do nothing else) then the GS II will last for more than 2 days, surely. Voice calls can't be a way to check battery, for any phone.
Regards.

ithehappy said:
Voice calls isn't a way to check your battery life. As soon as you hold the phone near your ear, screen turns off. For proper checking, you have to surf internet via Wi-Fi/3G, play Games, watch Movies etc..Just keep the screen on. I think if you even talk 6/7 hours per day (and do nothing else) then the GS II will last for more than 2 days, surely. Voice calls can't be a way to check battery, for any phone.
Regards.
Click to expand...
Click to collapse
Yes I know voice isn't a way to check battery. But like I said its good for me. I previously had iPhone 3G which I used like I use my GS2 and it gave me hardly 5-6 hrs usage of battery. So happy with GS2. I'll test my battery life by playing games and surfing and all that and I'll let you know the result.

yudi7 said:
Yes I know voice isn't a way to check battery. But like I said its good for me. I previously had iPhone 3G which I used like I use my GS2 and it gave me hardly 5-6 hrs usage of battery. So happy with GS2. I'll test my battery life by playing games and surfing and all that and I'll let you know the result.
Click to expand...
Click to collapse
That would be kind of you.
For me, on Wi-Fi, at Auto Brightness in stock browser, with SetCPU set in Ondemand mode, battery drains at a rate of 18-20% per hour (I don't let the screen off). Lets see if yours are better or not

i'm very happy with my battery performance.
__________________
Device: Galaxy S II
ROM: Lite'ning Rom v1.4 - overclocked to 1.4GHz
Kernel: CF-Root v.3.8 XWKF1
Previous Phone: Galaxy S

ammarselo said:
i'm very happy with my battery performance.
__________________
Device: Galaxy S II
ROM: Lite'ning Rom v1.4 - overclocked to 1.4GHz
Kernel: CF-Root v.3.8 XWKF1
Previous Phone: Galaxy S
Click to expand...
Click to collapse
As we don't know your happiness level I'd ask you to please mention some technical details, like how long your battery lasts or else? If possible post a Battery usage screen shot also.
Regards.

Battery Drain - Again! events/0 and suspend !

Hi,
I have on my Samsung Galaxy S2 as well as on my Samsung Galaxy Note a huge battery drain caused to 2 processes : "events/0" and "suspend".
I have already read a lot of threads concerning this problem, but without finding a solution.
I found out, that I only have this bug, when activating my Wifi connection (on both devices). I tried every wifi sleep policy, still getting same results.
So finally, my Android OS battery usage is more than 50%, even more than my display.
Does anyone know a solution for this problem, considering that now I'm sure that it's linked to the wifi activation on both phones. (I did a factory reset and there was no battery drain until I activated Wifi without having any other apps installed, besides of System Panel to monitor....)
Thanks in advance,
Regards,
Ben

If your phone is rooted you should 'freeze' or remove the apps "Wifi sharing manager" and "Wifi sharing" with Titanium Backup. Fixes your Wifi-problems.
It's a service that looks for other Samsung Wifi devices constantly when Wifi is turned on, thus draining the battery.

No, my Phone isn't rooted. I was not sure if I should or not, considering the warranty problems. Is there no other way?
A lot of other users don't have this problem, I don't get why I have it-.-

k1ck said:
No, my Phone isn't rooted. I was not sure if I should or not, considering the warranty problems. Is there no other way?
A lot of other users don't have this problem, I don't get why I have it-.-
Click to expand...
Click to collapse
As far as I know, it doesn't really void your warranty as long as you do it the right way and unroot your phone before you send it back to Samsung (if problems occur).
Someone correct me if I'm wrong.
As an alternative you can disable WiFi when you are not using it with apps like Green Power and Juice Defender (although I strongly advise Green Power for it's ease of use).

Thank you.. But there has to be another way to solve this problem, because people I know don't have this bug... without using any batterysaving software. :/

I guess it's a native issue of your device...
Sent from my Motorola Xoom™ with Tiamat Moray using Tapatalk

k1ckdapro said:
Hi,
I have on my Samsung Galaxy S2 as well as on my Samsung Galaxy Note a huge battery drain caused to 2 processes : "events/0" and "suspend".
I have already read a lot of threads concerning this problem, but without finding a solution.
I found out, that I only have this bug, when activating my Wifi connection (on both devices). I tried every wifi sleep policy, still getting same results.
So finally, my Android OS battery usage is more than 50%, even more than my display.
Does anyone know a solution for this problem, considering that now I'm sure that it's linked to the wifi activation on both phones. (I did a factory reset and there was no battery drain until I activated Wifi without having any other apps installed, besides of System Panel to monitor....)
Thanks in advance,
Regards,
Ben
Click to expand...
Click to collapse
In the first week that I got the Note, the device is eating up about 10% of batter per hour even when idle. The way that I use this Android phone was no difference than other Android devices I have used. When checked the battery usage, I was stunt to find that the Android OS was using 90% of the battery. Funny is that the screen showed a usage of 20minutes, while the OS showed a usage of almost 3 hours.
Soon after, I decided to do a factory reset due to other reasons. Some how this problem went away and the usage is back to normal. I don't know what happened, but in my case, it solved the issue.
Also I don't use the Note as a phone, but rather as a mini-tablet when I am not at home. So I decided to put the device in Flight mode when it is not in use. In this mode, the device hardly uses any battery. For example when I went to sleep, the battery was at 79%. When I woke up 7 hours later, the battery still shows 79%.
Hope this help!

[David] said:
I guess it's a native issue of your device...
Sent from my Motorola Xoom™ with Tiamat Moray using Tapatalk
Click to expand...
Click to collapse
How about you stop ASS-uming about devices that you don't own. The Galaxy Note is faster, smoother, lighter, and more portible than your Motorola tablet. The only tablet that can match or even outperform the Note is the Galaxy tab so have fun with your soon to be obsolete tablet.
OT: Your issue may be fixed with a factory reset.
Sent from my GT-N7000 using xda premium

Did you try 'Green Power'?
Did you try the app "Green Power". It is pretty good and promising. It will turn off Wifi / 3g while it is not using, it save much power. The paid version just including the 'night' mode.

I'm suddenly facing this issue. Have had no problem with the battery so far. My battery went from 40% to 15% overnight with the screen off and wifi off. :s
Posting screen captures in a bit
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Edit one more time: I found the battery draining really fast just now too: 15%-12% in about 20 minutes.
Clearing the RAM seems to have stopped that though.

I really do think it's the wi-fi sharing/manager processes. I've frozen mine to see if that makes any difference.

It's exactly the same for me, with the suspend and events/0 processes...

Any Solution
k1ckdapro said:
It's exactly the same for me, with the suspend and events/0 processes...
Click to expand...
Click to collapse
I have the same problem with my SGN, it drains the battery once wifi is activated, anyone came up with a solution for that?
---------- Post added at 11:53 AM ---------- Previous post was at 10:57 AM ----------
k1ckdapro said:
It's exactly the same for me, with the suspend and events/0 processes...
Click to expand...
Click to collapse
May I know what firmware u r using? Does it support Arabic?

awsaak said:
I have the same problem with my SGN, it drains the battery once wifi is activated, anyone came up with a solution for that?
---------- Post added at 11:53 AM ---------- Previous post was at 10:57 AM ----------
May I know what firmware u r using? Does it support Arabic?
Click to expand...
Click to collapse
I solved my problem thanks to a tip on this forum. I just did a factory reset for my ohone, and then reflashed the firmware. Its working great now

ok, but what version?
I'd think it's pretty relevant to know what android/fw-version you're all using? I'm on Samsung's original 2.3.6 and have no issues...

LazPL said:
I'd think it's pretty relevant to know what android/fw-version you're all using? I'm on Samsung's original 2.3.6 and have no issues...
Click to expand...
Click to collapse
No, its not. Coze I've upgraded to 2.3.6, and then downgraded to 2.3.5 again, and my problem was still there. Only a factory reset solved my problem.
By the way, u can notice something is wrong by the amount of heat generated while using the wifi, or by how slow pc usb charging could be. It even used to discharge when connected to pc!
The amount of heat was a very strong indication that there was something wrong.

Still battery drain
Hello all,
as of 26 march 2012, I still have something problematic on my samsung galaxy note. I flashed last Open German firmware (LC1) (from samfirmware). The phone is rooted, and as far as I noticed the "suspend" process is still draining the most battery compared with the display ratio. I tried to wipe everything, I downgraded back from LB1 to KKA with Odin, wiped, flashed LC1 and reinstalled onyl paid apps (i.e. not with no advertises). I turned off the Wifi but the susped is still there, eating 63% of resources.
There are not special kernel wakelocks... any ideas on how to go ahead?

I have a standard non rooted rom. I also faced sudden battery drain, but use the following solution -
Folders - keep to the application page not home screens
Backlight - off when inside, 50% if outside or on charge (auto drains faster)
Browser - use one of the low power saving mode
Screen background - live wallpaper eats battery. Use a dark based wallpaper , use much less power
With all the above battery is fine. GB 2.3.6.

I've had the exact same problem as the topic starter. Android system running over 90% in standby and suspend and events/0 running at 100%. I had this problem on stock XXLA6, on Darky V3.3 XXLA6 and Rocket V23 XXLC1 and after a number of full wipes.
My wifi wouldn't turn off in standby and setting different sleep policies didn't do a thing.
I removed the Samsung Sharing app, installed GreenPower and set it to turn off wifi and 3G/data as I don't need sync when it's in standby anyway.
All problems are gone now, after an hour in standby I still have 100% charge and after browsing for 5 minutes it lowered to 99%. Suspend and events/0 no longer run when the phone is in standby, wifi is turned off and Android System is at 4% now.

bioweb said:
I've had the exact same problem as the topic starter. Android system running over 90% in standby and suspend and events/0 running at 100%. I had this problem on stock XXLA6, on Darky V3.3 XXLA6 and Rocket V23 XXLC1 and after a number of full wipes.
My wifi wouldn't turn off in standby and setting different sleep policies didn't do a thing.
I removed the Samsung Sharing app, installed GreenPower and set it to turn off wifi and 3G/data as I don't need sync when it's in standby anyway.
All problems are gone now, after an hour in standby I still have 100% charge and after browsing for 5 minutes it lowered to 99%. Suspend and events/0 no longer run when the phone is in standby, wifi is turned off and Android System is at 4% now.
Click to expand...
Click to collapse
What is the name of the Samsung sharing app you deleted?

Battery troubleshooting (ROM inspecific)

This thread is to discus extremely poor battery life on the Nexus S. When we say extremely poor, we mean averaging <24 hours per charge at idle.
After much research I think it's safe to say that some of us are experiencing extremely poor or contrarily, extremely good battery life and no one seems to have an explanation. I'm hoping this thread will find the answer.
The issue:
Many NS users are experiencing extremely poor battery life regardless of:
Rom installed
Apps installed
Installation method
Battery used
Charging method/battery training
Phone usage
Power configuration/tweaks
When we say "extremely poor" we mean <24 hours at idle, but many users are getting less than 8h/C at idle.
I personally have tested this against several ROMS both GB and ICS. We all see slightly better battery performance with GB ROMS, but never greater than 24h/charge.
My ROM history:
Tested the following ROMS for 4 days each, following the same installation procedure each time.
CM7 (nightly/stable) - ~15h/[email protected]
CM9 - ~13h/[email protected]
CyberGR .v4.5 - ~11h/[email protected]
CyberGR .v5.0 - ~11h/[email protected]
Installation method:
Wipe battery stats
Wipe data/factory reset and wipe cache partition
Flash Dalvik-wiper.zip and wipe Dalvik Cache
Wipe data/factory reset and wipe cache partition again
Format /system/data/cache/boot/sdcard
Flash ROM
Flash Gapps if applicable (CyberGR comes with Gapps installed)
I was running an AUCKF1 Radio for all tests. I did try a few other radio's but did not see any noticeable increase in battery life *edit-flashed XXXKB3 and may have increased my idle time by 6x? still testing*
I've also never personally seen an NS get >24h/C, and I've deployed >40 of them to customers. I've only ever heard of >24h/C here on the forums where it seems quite common.
I've seen reports of users flashing the OTA automatically or manually, and some experience <8h/[email protected] while others see >3d/[email protected] I've also tested the OTA and never saw better than 13h/[email protected]
So, we're trying to find the common denominator between those with good battery performance vs. those with poor performance.
Suspects:
Android OS is almost always reported to be active/awake for at least 50% of the time, even at idle on a brand new clean install. It is always the highest consumer of battery, always keeps the CPU awake.
I propose the following test:
Regardless of your setup, if you are experiencing >2d/[email protected] or with use, please post the following:
Phone model (ie: i9020a, i9020t...)
ROM
Radio version
Installation method
Screenshot of your battery monitor from a full charge over a minimum of 10 hours.
Screenshot of your battery use by application/service (we notice that Android OS seems to be the culprit in most cases of poor performance)
For those getting <1d/[email protected], please do the following and then post the same as above:
Note: This should be done overnight.
Follow the above flash instructions and flash whatever ROM you please.
Reboot to recovery and wipe your battery stats.
Power off your handset and give it a full charge while powered off.
On first reboot, sign into a single Google account but do not restore your apps/backups and disable Google sync.
Do not install any additional applications.
Enable wifi/bt/gps/data/sync and associate to a wireless network
Do not modify any power settings.
Leave your handset to idle overnight for at least 8 hours without touching anything.
In the morning, take a screenshot of your battery use as well as battery use by application/service.
Post Phone model, ROM, Radio version, Carrier, and Screenshots.
I recognize that there is some argument about how fast your battery will re-train itself after wiping battery stats. In my experience the training seems to be optimal after 1 full charge to full discharge cycle, but ultimately I've never seen further training result in >24h/C. Someone please let me know if there's a more accurate way to test this? Maybe we shouldn't be wiping battery stats at all?

I'll get us started.
Sorry, didn't get screenshots after 8 hours because my battery wouldn't last that long.
Phone model: Samsung i9020a
ROM: CyberGR .v5
Radio: AUCKF1
Carrier: Rogers
Wifi associated, BT on, Data on, Sync on, 3G connected, added one Google account but did not restore settings and disabled account sync.
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Results fluctuate between ~8h/[email protected] and ~14h/[email protected]
With light to moderate use, I get 6-10h/C

Hey Ben i just did what you did in the other thread. full charge everything on kill all unneeded services.
I'll admit that i forgot to kill extra services and it plummeted my battery to 92% in about 45min. I had an "oh ****" moment and went and killed the random apps.
Im at 2 hours extra now and lost 3% only, everything still on.
So with that info i'll mention this for me would be considered heavy usage. I'll never have everything on constantly. When I was posting up my results of light usage and getting 3 days - note that i had everything firewalled while on 3G except for my emails and messaging and took a few calls only. everything else was off.
I'm gonna guess that with it all on and actually using the phone i'll hit at most 10 hours, probably not even that.
So that basically puts us about even. I'm curious if you do my light tests...will you be seeing 3 days also ? If yes then we can rule out models basically.

Flashed XXXKB3, factory reset (according to OP instructions), flashed CyberGR .v5 again, signed into one Google account, disabled Google sync+backup, enabled and connected to wifi, bt/gps/everything on, then left my phone overnight. Results.
Looks ****in' Gooood. 1.2%/[email protected] draw.
But then, opened my screen once, played some tunes through BT to my truck, drove around for 13 minutes, went back in the house and left the phone idling again and look at the drop! It's continued to draw like this all day now, just idling. I've done NOTHING but play 13 minutes of music and then back to idle.
What's DOES IT MEAN??!!
So I rebooted my phone and let it idle again without touching anything, and still seeing the wicked battery draw. I dunno wtf to think here, and I can't get the draw back down to 1%/[email protected]
*edit* For the sake of 100% transparency, while the phone was idling at 1%/h overnight, I was far enough away from the wifi AP i'd associtated to, that it MAY have lost signal and given up, so perhaps the wifi hardware finally went to sleep. Does anyone know if wpa_supplicant (or whatever controls wifi in Android) runs is represented by AndroidOS?
Sent from my Nexus S using XDA App

Oh. Dur...
I think that may be it. Wifi was probably dis-associated overnight. You can see at the very beginning of the battery recording, there's a sharp dip in charge for about 15 minutes, which corresponds directly to Wifi association, then the draw goes nearly flat (1%/h) for 10.5 hours and the Wifi is not associated.
Testing now... Leaving Wifi on, but dis-associated. See if that nice flat line comes back.

Phone model: Samsung i9020a
ROM: CyberGR .v5
Radio: UCKE1
Carrier: Rogers
This is a normal night of going out, connecting with friends, a bit of music before. A weekend for when it is most important, these are the results. I forgot to photo the android os but it said it was awake, cpu for 4 hrs.

Regarding the Android OS being highest battery consumer, it might be false alarm:
http://forum.xda-developers.com/showthread.php?t=1456265
Although still, that hasn't explained the high drain (<10h/day) you're experiencing.
In your first set of screencaps (the 2h30m one) it seems obvious that the culprit is Mediaserver and Google+? One of the most annoying things about ICS that I found is that after flashing ROMs or kernels, Google-Photos have a tendency to enable sync behind our backs. Someone in my local forum discovered when he logged in G+ in his PC that the pictures in his Nexus S had suddenly shown up in the G+ account even though he never uploaded them there. After he disabled that sync, his battery life improved. As a result, I've grown OCD about checking my sync settings every once in a while. The Google-Photos option doesn't always show right away when we set up a new Google account.

AOKP Milestone 2 rom with Steve Garon's 1.12 kernel. 100/1100mhz, interactive governor.
More screen time:

My battery drain at idle (next to none) :
Under heavy usage, screen on, running apps (still relatively efficient draw) :

Braneless said:
AOKP Milestone 2 rom with Steve Garon's 1.12 kernel. 100/1100mhz, interactive governor.
View attachment 878231View attachment 878232View attachment 878234
More screen time:
View attachment 878239View attachment 878240
Click to expand...
Click to collapse
Phone model and radio?

I'm back to 1%/[email protected] with everything but wifi enabled.
All sync settings enabled with no sync delay.
G+/data/gallery sync all enabled for 3 accounts. Receiving about 30 emails in 14.5 hours overnight. This should work out to 111h/[email protected]
The question here for me is that I thought Wifi would use less power than 3G given it's such lower range. I thought that when Wifi was associated that your 3G would automatically disconnect, thus using less power when associated to a Wifi AP than when connected to 3G.
Am I mistaken in this? Is this not the desired operation?
*edit* It may be looking like my draw increased by about 8x as soon as I opened the screen for the first time this morning, and hasn't dropped back down to the 1%/h. Right now it seems to be at about 10%/h again, though I'll report back on this later today.
Sent from my Nexus S using XDA App

Wow. What settings this time?
Sent from my Nexus S using XDA App

Paragon_X said:
Phone model and radio?
Click to expand...
Click to collapse
D720 ns4g and latest radio - D720SPRKE1 or whatever it's called.

I'm getting the same...
power drain increases for dunno whatever reason...
right after a reboot it goes ok if I do not touch it... as soon (or five minutes later) as I start playing with it the power drain increases a lot and android OS takes over any other service...
generally to test I wipe the battery stats before booting from recovery...
maybe we should check in logcat what trigger the high android OS usage?

evcz said:
I'm getting the same...
power drain increases for dunno whatever reason...
right after a reboot it goes ok if I do not touch it... as soon (or five minutes later) as I start playing with it the power drain increases a lot and android OS takes over any other service...
generally to test I wipe the battery stats before booting from recovery...
maybe we should check in logcat what trigger the high android OS usage?
Click to expand...
Click to collapse
I've checked logcat/dmesg and haven't seen anything super suspect (to my somewhat untrained Android eyes). I have done a tonne of power management scripting/troubleshooting in laptops and other mobile devices but this is really my first serious foray into Android PM, so I may be missing something.
Paragon_X said:
Wow. What settings this time?
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
As I said, stock settings from CyberGR .v5. Signed in to all three Google accounts and left sync enabled. Turned off Wifi but left everything else enabled.
Drove around (phone paired to my truck for music) for a few hours today, light/moderate use, and I'm currently sitting at 69% battery remaining, coming up on 24 hours on battery. Realistically, this is probably a little lighter use than normal for me, plus I usually plug in when I'm in the Jeep as I'm running not only music over BT to my Jeep, but also streaming OBDii data from my ECU to Torque (and my screen is usually on full time while driving as I like to keep track of my mileage (troubleshooting fuel efficiency as well ).
So all said, stock settings with CyberGr, Radio XXXKB3, Wifi off, everything else on, and I should easily get 2 full days of light use.
Now that said, I'm still waiting for someone getting 3-5 days to chime in. I still feel something isn't quite right.

Wow. Practically the same as myself but my battery is now around 6-7 hrs before I need a charge. I will have to buy a new battery and see if that is the culprit. Over even just flash CM9 instead, who knows..

Paragon_X said:
Wow. Practically the same as myself but my battery is now around 6-7 hrs before I need a charge. I will have to buy a new battery and see if that is the culprit. Over even just flash CM9 instead, who knows..
Click to expand...
Click to collapse
I doubt it's a bad battery. You're seeing the same life I was before I flashed the XXXKB3 radio and re-installed the ROM properly. Follow the installation instructions from the OP and see if that solves your problem.

After looking at an earlier shot here I notice my android os stays on most of the time hence my bad battery. How do I get it to sleep?

Paragon_X said:
After looking at an earlier shot here I notice my android os stays on most of the time hence my bad battery. How do I get it to sleep?
Click to expand...
Click to collapse
So does mine, but it is not an accurate reflection of battery drain, per android engineer Dianne Hackborn. Look at the Android OS percentage in my screen shots - it doesn't matter.

For those with excessive battery drain: install Battery Monitor Widget and Better Battery Stats from the market. Those two apps should provide all the data you need to troubleshoot poor performance.
Also, check your signal strength. Weak reception will drain your battery in a hurry.

[Q] Incredibly annoying battery life on idle, AFTER rooting

I'll start off that I'm a novice android user, I got this phone a month ago and before that I was using a Nokia E63.
Anyway, so I rooted and all that junk, did a factory reset and all that junk, and now my battery is complete garbage on idle.
Before I rooted, when in idle for 8~ hours, the slope was very minimal and I lost about 1-5% battery life. Now, the battery is draining like crazy, to the point where I have to charge several times a day.
I know the problem isn't the fact that I rooted.. but what is!?!
yesterday morning
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today morning (15 minutes ago)
Obviously it's this thing called Google Services that doesn't show up *AT ALL* when I was using the phone all yesterday. It seems to only use battery when the phone is sleeping.
Halp!

kernel
The stock kernel is garbage is what it is , install Franco kernel and forget u ever had this issue , rooting your phone didn't cause battery drain like u said ..... Google services could be anything , check your maps app setting

drawde40599 said:
The stock kernel is garbage is what it is , install Franco kernel and forget u ever had this issue , rooting your phone didn't cause battery drain like u said ..... Google services could be anything , check your maps app setting
Click to expand...
Click to collapse
The stock kernel is actually very improved to all other efforts and it sleeps likes baby. I'm willing to bet maps is the issue, but it isn't like the stock kernel sucks THAT much.
Sent from my Nexus 4 using Tapatalk 2

joshnichols189 said:
The stock kernel is actually very improved to all other efforts and it sleeps likes baby. I'm willing to bet maps is the issue, but it isn't like the stock kernel sucks THAT much.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Ya no it dose , i coundnt get over 2 hours screen on time with my normal settings with stock ROM and kernel . screen 70% , GPS , data , Google now , sync all ON . changed to Franco kernel i get 4.4 hours screen on time now , no more heat throttle , no more heat , its smoother , faster just better , something to think about / try , u can always go back just as easy

OK, now this is strange,
at first I thought it was fixed; what I did was update Google Maps. After a few hours, the problem of "google services" came back...
help!!

Keep your phone connected to Wi-Fi while you're sleeping and it will drain much less (I've sometimes seen <5% over 8-10 hours). Keeping your phone on network will continue to "wake it" during the night.

Get GSAM Battery Monitor or BetterBatteryStats to get a better look at exactly what is draining your battery so quickly.

It has to be one of the Google apps running on the background. Like somebody mentioned, get better battery stats to see what's exactly draining your phone. Also, I've noticed that if I keep NFC enabled, some apps that utilize it, will kill my phone way faster. So check NFC maybe, try disabling it and see if it makes a difference.
Sent from my Nexus 4 using xda app-developers app

I suggest you try Franco Kernel since you're rooted anyways.
No regrets.
Swagged out of my NeXus⁴ using XDA Premium

I can only underline what ppl said in terms of franco kernel. Easy to patch and insane improvement. And it is for free unless you buy his app. I was laughing when I saw those pics with such a low battery life. I always get 6 hours screen on time.

Gaheris said:
I can only underline what ppl said in terms of franco kernel. Easy to patch and insane improvement. And it is for free unless you buy his app. I was laughing when I saw those pics with such a low battery life. I always get 6 hours screen on time.
Click to expand...
Click to collapse
6 hours with data enabled the entire time?

dralways said:
6 hours with data enabled the entire time?
Click to expand...
Click to collapse
WiFi..no way he gets that with data as this phone SUCKS on battery life with 3G/H.

Well before I rooted there was absolutely no problem with battery. I use a $15 tmobile plan with no data. I basically use my phone like a tablet. NFC and most other features are disabled.
I'll give that other kernel a shot once I figure our how to do all this...

Hi
Smiert said:
I'll start off that I'm a novice android user, I got this phone a month ago and before that I was using a Nokia E63.
Anyway, so I rooted and all that junk, did a factory reset and all that junk, and now my battery is complete garbage on idle.
Before I rooted, when in idle for 8~ hours, the slope was very minimal and I lost about 1-5% battery life. Now, the battery is draining like crazy, to the point where I have to charge several times a day.
I know the problem isn't the fact that I rooted.. but what is!?!
Obviously it's this thing called Google Services that doesn't show up *AT ALL* when I was using the phone all yesterday. It seems to only use battery when the phone is sleeping.
Halp!
Click to expand...
Click to collapse
I had the exact same issue, and there is a problem with the Nexus 4 in that some applications stop the phone deep sleeping, even though the same applications have no issues on other devices. This keep awake seems to happen lower down and isn't recorded in Android as the phone being awake. The same issue appears on Franco kernel (I've tested it) as well so that isn't a fix if this is the problem.
Follow my post here to see if you are affected, then work to find the problem app. http://forum.xda-developers.com/showthread.php?p=36100401#post36100401
If anyone wants to test this with other kernels then:
Download CPU Spy. Reset CPU spy timers to zero, and first check the phone is deep sleeping by leaving for 30 minutes with screen off and USB cable unplugged and confirm Deep Sleep is around 90% or more. Now download Snowfall Live Wallpaper and set the wall paper as active, repeat the above, and see that Deep Sleep is never entered into. Use your favourite battery stats checker and you will find no indication of wake locks. Snowfall Live Wallpaper doesn't even have permission to keep a device awake.
Next set a different wall paper from the stock options (live or static) and repeat the test, note that Deep sleep is STILL not being entered even though the live wall paper is no longer in use. Now from the list of cached processes, remove the cached process for the Snowfall Live wall paper, repeat the test, and now the phone is entering Deep Sleep. So this particular wall paper has the power to stop the phone deep sleeping even when it is a cached (and so stopped) process. Another application that causes this bug is BeWeather & Widgets.
Even un-installing the problem application doesn't return the phone to be able to deep sleep, as the app is still a cached process. This can make it difficult to find the app causing a problem.
Testing these applications on a Nexus 7 and HTC One X causes no issues with the device deep sleeping, ergo, Nexus 4 bug. I'm sure there are other applications causing the same issue.
Regards
Phil

drawde40599 said:
The stock kernel is garbage is what it is , install Franco kernel and forget u ever had this issue , rooting your phone didn't cause battery drain like u said ..... Google services could be anything , check your maps app setting
Click to expand...
Click to collapse
It is not garbage at all.
The op must have too many background apps running. Probably has nothing to do with the kernal or rooting..
Sent from my Nexus 7 using xda app-developers app

I have wifi on almost all the time and I get a full day, 5 hours screen on time. I use franko kernel and aokp.
Google services must be something like lattitude reporting your location, or an app that polls data all the time. Even with
auto sync on, whatsapp syncing and wifi on all day I dont have google services anywhere in my battery list.
Of course, it is entirely possible it is something to do with google now, which I have turned off

Richieboy67 said:
It is not garbage at all.
The op must have too many background apps running. Probably has nothing to do with the kernal or rooting..
Click to expand...
Click to collapse
My "multitask" button menu is always empty. I never keep anything voluntarily suspended in the memory (if that's what your talking about)
biffsmash said:
I have wifi on almost all the time and I get a full day, 5 hours screen on time. I use franko kernel and aokp.
Google services must be something like lattitude reporting your location, or an app that polls data all the time. Even with
auto sync on, whatsapp syncing and wifi on all day I dont have google services anywhere in my battery list.
Click to expand...
Click to collapse
I originally hated Google Maps (before I rooted) because it used up about 1-5% of my battery with GPS and all other related settings disabled... no problems at all with battery back then. I basically did the same thing after I rooted, but then I started having the Google Services battery problem, where then I re-enabled most of the Google applications I disabled (maps, books, magazines, wallet) and updated them, hoping for Google Services to be satisfied, but nada.
Anyway, today was TERRIBLE. I need to keep WiFi on all the time otherwise Google Services eats my battery. But at the end of school today, I looked at my phone in horror to see that Google Maps took a huge chunk of my battery (and 3 hours earlier there was no trace of Google Maps in the battery status settings)
Battery life today : the bad stuff started happening once I left the mobile service area. Google Maps did not show up on battery settings before that time.
Keep AWAKE FOR AN HOUR???
still not sure what this is, 5% from this app basically translates to another 30-40 minutes of battery life
acceptable wifi usage
CPU SPY:
I just disabled the Google Location Services, I wonder if that would change anything... could it really be that simple? Unlikely.
As for applications, I don't have many... and I don't have a live wallpaper or anything. I keep my phone on the lowest brightness indoors and automatic outside. I try to save every bit of battery I can, and a useless wallpaper or running application doesn't help with that (I uninstalled a few apps like FB that kept on running in the background)

I wish I had 20 hours of battery life... My N4 is empty after 6 hours on CM10 with Francos kernel.

Freeze Maps

Android OS draining battery?

Well my nexus has been giving me 5 hours SOT for the longest time, but just randomly, it decided to start dying really fast. I checked battery stats, and sure enough, android OS is the killer here. I'm aware android OS drains are usually because of apps installed, but I haven't installed anything new or suspicious any time recently. I even did a full wipe and reinstalled the rom I'm running.
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Are any of these apps known battery drainers?
Here's my battery shots.
Anyone know how to troubleshoot which apps are killing my system? I'm running CM 4/22/13 and franco.kernel r127 if that makes any difference.
Thanks guys!

If your phone has been on standby for that long then obviously androidos will be up there since nothing else has been working your battery. Post the pics so I can clarify this.
Sent from my Nexus 4 using xda app-developers app

Eddy130306 said:
If your phone has been on standby for that long then obviously androidos will be up there since nothing else has been working your battery. Post the pics so I can clarify this.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Updated OP

Eddy130306 said:
If your phone has been on standby for that long then obviously androidos will be up there since nothing else has been working your battery. Post the pics so I can clarify this.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Nah because when it happened (at least for me) the battery drain was sudden and drastic.
All day Screen was at the top, then all of the sudden in the evening Android OS went from 15% to 74% in about 15 minutes.

ingenious247 said:
Nah because when it happened (at least for me) the battery drain was sudden and drastic.
All day Screen was at the top, then all of the sudden in the evening Android OS went from 15% to 74% in about 15 minutes.
Click to expand...
Click to collapse
Pretty much my scenario

android os thing happened to me, i think for me it was because it was trying really hard to connect and stay connected to the bad wifi at my school, turned off wifi and the drain stopped. not sure about ur situation though

http://forum.xda-developers.com/showthread.php?t=1179809
This might just help you out. It'll show you any partial and kernel wakelocks and which processes are causing it.
I had this problem a while ago, so I did a clean install of my rom and apps and the problem was gone. If you can pinpoint the app that's causing your phone to stay awake, you can avoid having to do what I did xD

Really weird... this has been happening to me too, but not as drastic as yours (still a good chunk)
I just reflashed my ROM just in case that was the problem.
Also when I used better battery stats to see what's going on, all it showed me was the power manager thingy. Which showed me nothing.
Sent from my Nexus 4 using Tapatalk 2

kyokeun1234 said:
Really weird... this has been happening to me too, but not as drastic as yours (still a good chunk)
I just reflashed my ROM just in case that was the problem.
Also when I used better battery stats to see what's going on, all it showed me was the power manager thingy. Which showed me nothing.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
That's all it ever shows when it comes to Google services jacking up the phone. Kind of convenient for Google since we can't pin down/point blame for the issue
Sent from my Nexus 4 using xda premium

Turning off WiFi when idle at school seems to have helped. I did notice that when I got to my house it seems the battery drain is more normal. Maybe it really is because the WiFi is just slow.
Sent from my Nexus 4

ingenious247 said:
Nah because when it happened (at least for me) the battery drain was sudden and drastic.
All day Screen was at the top, then all of the sudden in the evening Android OS went from 15% to 74% in about 15 minutes.
Click to expand...
Click to collapse
did you ever solve this problem? or find out what caused it?

I had a similar issue. My phone would not deep sleep. Yet things would work fine when I wasn't on WiFi. A reboot of my WiFi router fixed it.
Sent from my Nexus 4 using Tapatalk 4 Beta

I got the same problem here with my I9305 after updated to 4.3
It has a bit improvement after I disabled the ALWAYS WIFI SCANNING, and sync

[SOLVED!!]
i have this problem with my galaxy grand phone ,the battery discharges in 20hr , default OS was 4.1.2 official samsung , i changed my rom into a slim custom rom based 4.2.2 , but the battery has same problem again , Android OS battery Usage Was 80% !!!! and screen usage just was 9% !
my installed software :
Viber
WeChat
MyKet {Like Android Market}
Weather Widget
i used wifi 1-2 hour in a day ,
=================================
[SOLVE]
first go to Settings -> Developer Options -> Apps Tab -> checked Don't keep activities
set brightness to auto
then go to location services -> off access my location
then go to wifi -> advanced Wi-Fi -> keep wi-fi on during sleep -> change to Never
now go to application manager -> Running Tab -> Force stop some apps with extra ram usage like settings
my phone just uses 5% battery in 13hr sleep mode ; ENJOY!

ohhacker said:
then go to wifi -> advanced Wi-Fi -> keep wi-fi on during sleep -> change to Never
Click to expand...
Click to collapse
I think if you only do this you will solve the problem.
At least for me my only problem with "Android OS" is when sleeping my phone and having "keep wi-fi on during sleep -> Always".
I have franco kernel and cannot check the kernel wakelocks but I test some days with CM kernel and didn't see any kernel wakelock that consumes too much battery... but maybe some of you have this problem: http://hardforum.com/showthread.php?p=1039838404

Wow, what a surprise... I solve my own problem with my last reply xD
I mean, when I installed CM months ago I select "keep wi-fi on during sleep -> Always" because I thought that if I don't do this I will not receive any notification. The fact is that when putting "Never" Android OS was CPU active mostly the 80-90% of time my phone was sleeping and Wifi ON and now with "Always" (or when plugged) has CPU active like 20-30%... AND I receive notifications also.
Probably when downloading a large data If I put my phone to sleep It will stop download, I didn't try.
One thing I don't understand is that when sleeping it doesn't use mobile data (as it says "Increases data usage"), even I have data and wifi on.
So, if I get notifications in both options ("Never" and "Always") and I get less battery drain with "Never" I prefer "Never".

mierda1 said:
Wow, what a surprise... I solve my own problem with my last reply xD
I mean, when I installed CM months ago I select "keep wi-fi on during sleep -> Always" because I thought that if I don't do this I will not receive any notification. The fact is that when putting "Never" Android OS was CPU active mostly the 80-90% of time my phone was sleeping and Wifi ON and now with "Always" (or when plugged) has CPU active like 20-30%... AND I receive notifications also.
Probably when downloading a large data If I put my phone to sleep It will stop download, I didn't try.
One thing I don't understand is that when sleeping it doesn't use mobile data (as it says "Increases data usage"), even I have data and wifi on.
So, if I get notifications in both options ("Never" and "Always") and I get less battery drain with "Never" I prefer "Never".
Click to expand...
Click to collapse
You say you receive notifications even with the "never" option, but are you sure its not using your cellular data connection instead?

I've experienced similar problem with GS4 after 4.3 update
I've experienced similar problem with GS4 after 4.3 update
There is a bug in google backup service, google backup service acquires wfii connectivity lock and does not release it for hours which prevents device entering deep sleep and as a result drains battery. Fortunately you can disable backup in Settings->Accounts->Backup and Reset-> uncheck 'Backup my data'. This should resolve the issue ... after a full recharge monitor your battery stats - Android OS should NOT be on the top.
Click to expand...
Click to collapse
Sorry disabling backup didn't help - encountered the same problem. There is indeed a bug that some OS module that holds a wlan lock but it's not a backup service. I suspect that full charge triggers this flow. Device restart will temporarily fix the issue. I'll post if i will find the causer, sorry for mislead.
Download this application it will resolve the problem till google fix it. h_t_t_p://kvant.store.aptoide.com/app/market/com.kvant_hv.BatteryLeakResolver/7/4579526/Battery%20Leak%20Resolver%20(OS%204.3)