Database Users

SystemPanel shows system using CPU overnight?

Trying to figure out what was causing excessive battery drain on my phone, I downloaded SystemPanel and had it log overnight. I read that when the phone is unused, none of the apps in the "Top Apps" should show over 0.2%. I left my phone on the charger all night and the "system" app sucked up 1.2% completely unused. Apparently there should also be some kind of standby app showing up, and that is nowhere to be seen. I'm running Nero v5. Anyone know what could be going on?
Sent from my SGH-T959 using XDA App

System panel logging uses cpu cycles

n2ishun said:
System panel logging uses cpu cycles
Click to expand...
Click to collapse
In my experience, System Panel is not the culprit when this happens. I've had success with getting 0% battery drain on airplane mode overnight, and always w/SP running. (It's inconsistent, though -- I actually tried it just last night, and Market ended up jacking the CPU all night, even though I had killed Market hours before bed. Don't know why this happens.) I actually leave SP Monitoring on all the time, and generally get (what I consider to be ) great standby battery life.
To the OP: what were the top apps that were running (at more than 0.0%); and were they burning CPU the whole time? If an app/process is running the whole night, it seems to also "trigger" System to burn CPU -- but the app itself is the "real" culprit. (Pls keep in mind I know none of the technical details; but I've experimented a lot w/this.)
EDIT: sorry, just read yr post more closely. To address two more points:
(a) re: the "Standby" process -- this rarely pops up for me, even on the occasions where I do get a totally placid phone overnight w/no batt. drain.
(b) re: I left my phone on the charger all night -- try it without doing this (stay off charger & use airplane mode), and see what happens. I haven't had good luck w/leaving phone on charger: I wake up to same thing -- System jacked up -- and end up needing to power-cycle phone to get System to settle down.
(By the way, I'm totally stock JI6, and so can't address Nero etc.)

The standby process ("suspend") should always be near the top of the list if your phone is truly in standby in a given 8 hour period.
notverycreative - system always uses between 1.9-2.5% for me. It's the system processes and regular apps that you should pay attention to. Once I used Titanium to freeze Media Hub, the DRM Protection Processes, WiFi Calling and some poorly coded apps, my battery life improved significantly.
Here's some screen shots from mine over night.

Alright, I'll try doing all that tonight. I just flashed Bionix V so I lost my data from last night, but I'll try to recreate it tonight. I did get rid of the DRM processes and Media Hub, as well as SNS sync. I never installed WiFi sync for that exact reason.
Sent from my SGH-T959 using XDA App

Just spent the night on flight mode and nothing took more than .1% battery and the battery didn't drain much at all, as the meter read 90% before and after I slept, which was about 6 or so hours. It may have something to do with flashing Bionix, but regardless I am happy thanks everyone!
Sent from my SGH-T959 using XDA App

You should have left flight mode off. ;-)
Sent from my SGH-T959 using Tapatalk

Battery drain since latest update - solved!!!!!

Since the July 8.44.11 update my tablet in standby drains a good 3% or more per hour despite wifi off on screen off. This setting previously did not drain more than 1-2% overnight.
Nothing changed other than updating firmware.
Did some investigating to find the source of the drain.
See below as I think I found the source. Tablet was not getting into deep sleep.
OK I have solved this!!
I rooted the latest update and performed an experiment.
I used CPU spy to measure sleep.
With stock rooted the device was not going into deep sleep on 8.4.4.11
Then with titanium backup I froze the following to programs preventing them from running:
Mobile data and mobile network configuration.
Low and behold I now get deep sleep when testing this with CPU spy.
I suspect this wasnthe same source of battery drain in standby that occurred with the iconia tablet before a software update. Seems these programs are preventing deep sleep. Based on their description they seem designed for mms and sms.
Perhaps they were put there for the upcoming 3g enabled.models.
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse

Canadoc said:
Since the July 8.44.11 update my tablet in standby drains a good 3% or more per hour despite wifi off on screen off. This setting previously did not drai more than 1-2% overnight.
Click to expand...
Click to collapse
What do you have MobileDock Battery saving mode set to? Having this unchecked means your transformer is constantly spending power waiting for you to make a key stroke. If you have a newer keyboard or no keyboard you can check this and save that 2-3% per hour.
I do not see any additional power drain with the newer update.

I have observed increased battery usage in standby mode after the update.... an the average of 3% per hour. There has been no change in installed apps between the firmware update.
I rebooted the TF multiple times over the last few days without any improvement. Out of desperation, I plugged the TF to the recharge, and switch the tablet off. I let it charge up, and now the battery drain seemed to have reduced to pre-update rates. See screen capture of before, and after with the power-off-and-charge in the middle.
Observe also the CPU seems to be constantly awake even though the screen is off and in standby mode

jaytman7 said:
What do you have MobileDock Battery saving mode set to? Having this unchecked means your transformer is constantly spending power waiting for you to make a key stroke. If you have a newer keyboard or no keyboard you can check this and save that 2-3% per hour.
I do not see any additional power drain with the newer update.
Click to expand...
Click to collapse
This is undocked!
Sent from my Transformer TF101 using Tapatalk

visualvalhalla said:
I have observed increased battery usage in standby mode after the update.... an the average of 3% per hour. There has been no change in installed apps between the firmware update.
I rebooted the TF multiple times over the last few days without any improvement. Out of desperation, I plugged the TF to the recharge, and switch the tablet off. I let it charge up, and now the battery drain seemed to have reduced to pre-update rates. See screen capture of before, and after with the power-off-and-charge in the middle.
Observe also the CPU seems to be constantly awake even though the screen is off and in standby mode
Click to expand...
Click to collapse
2 observations I have made.
CPU spy shows I am not going into deep sleep
When I look at applications under the settings, under running services there is mobile data and mobile network configuration which to me seem more appropriate on a phone.
The iconia tab had issue with similar type process draining battery before an update. I wonder if the pre 8.4.4.11 update if those processes were running.
Sent from my Transformer TF101 using Tapatalk

Experiencing the same, am on prime 1.6 (default kernel) and last night i removed charger when it was on 100%.
This morning battery was on 87%, this was after 6 hours. More then 2% per hour.
I have wifi setting on off when screens turns off.
When checking the applications in the battery info screen i saw "Maps" on top of the list. So when leaving to work i killed "Maps" hoping that it was the cause of the drain.
When returning home about 9 hours later battery was on 67%, so still about 2% per minute. That's even more then my SGS 2 with 3g on. So something is really wrong.

I saw an android bug listed, that after a reboot, the wifi sleep setting gets reset. Make sure that you select the wifi off when screen is off setting after rebooting.

I really want to help with this because there are a lot of people who are having these battery drain complaints and I just can't figure out the differences between my stock tablet and theirs. My tablet shows a very slow beautiful drain overnight last night.
My applications "All" shows the network and wireless applications also, however my running applications list is extremely small (Settings, The Weather Channel, ASUS Sync, com.asus.keyboard, Google Services, Music, Maps, MyNet, ASUS MyWater(asus live background)) so I can't say that network services are affecting my battery.

jaytman7 said:
I really want to help with this because there are a lot of people who are having these battery drain complaints and I just can't figure out the differences between my stock tablet and theirs. My tablet shows a very slow beautiful drain overnight last night.
My applications "All" shows the network and wireless applications also, however my running applications list is extremely small (Settings, The Weather Channel, ASUS Sync, com.asus.keyboard, Google Services, Music, Maps, MyNet, ASUS MyWater(asus live background)) so I can't say that network services are affecting my battery.
Click to expand...
Click to collapse
My TF has the same discharge profile as your device before the last 3.1x update. also, the CPU was never active in sleep mode. After the upgrade, the AWAKE bar is always active, and as you can see from my screenshot above, kills the battery during standby

visualvalhalla said:
I have observed increased battery usage in standby mode after the update.... an the average of 3% per hour. There has been no change in installed apps between the firmware update.
I rebooted the TF multiple times over the last few days without any improvement. Out of desperation, I plugged the TF to the recharge, and switch the tablet off. I let it charge up, and now the battery drain seemed to have reduced to pre-update rates. See screen capture of before, and after with the power-off-and-charge in the middle.
Observe also the CPU seems to be constantly awake even though the screen is off and in standby mode
Click to expand...
Click to collapse
Am trying this now, will report back. You did not charge it completely when turning it of as i understand from your capture.

Under google services, you might want to turn off picasa sync. I was told to do the same an I believed it has helped. Also try turning on airplane mode and see if it helps.
I have mostly unchecked all of the sync options which has helped in that my drain is like 2% overnight ~8hrs although I would like it to be even less .....

sazfar13 said:
Under google services, you might want to turn off picasa sync. I was told to do the same an I believed it has helped. Also try turning on airplane mode and see if it helps.
I have mostly unchecked all of the sync options which has helped in that my drain is like 2% overnight ~8hrs although I would like it to be even less .....
Click to expand...
Click to collapse
I'm sorry... this probably is a stupid question. But where are the settings for google services on the Transformer?

OK I have solved this!!
I rooted the latest update and performed an experiment.
I used CPU spy to measure sleep.
With stock rooted the device was not going into deep sleep on 8.4.4.11
Then with titanium backup I froze the following to programs preventing them from running:
Mobile data and mobile network configuration.
Low and behold I now get deep sleep when testing this with CPU spy.
I suspect this wasnthe same source of battery drain in standby that occurred with the iconia tablet before a software update. Seems these programs are preventing deep sleep. Based on their description they seem designed for mms and sms.
Perhaps they were put there for the upcoming 3g enabled.models.
Sent from my Transformer TF101 using Tapatalk

Elzbieta said:
I'm sorry... this probably is a stupid question. But where are the settings for google services on the Transformer?
Click to expand...
Click to collapse
Click
Settings --> Accounts & sync --> [email protected]
Inside that folder you will have checkboxes for everything Google that can be synced. IMO Calendar, Contacts, and GMail are all that is needed to keep you up to date. You can manually sync everything in the settings menu of the program you use less frequently.

Canadoc said:
OK I have solved this!!
I rooted the latest update and performed an experiment.
I used CPU spy to measure sleep.
With stock rooted the device was not going into deep sleep on 8.4.4.11
Then with titanium backup I froze the following to programs preventing them from running:
Mobile data and mobile network configuration.
Low and behold I now get deep sleep when testing this with CPU spy.
I suspect this wasnthe same source of battery drain in standby that occurred with the iconia tablet before a software update. Seems these programs are preventing deep sleep. Based on their description they seem designed for mms and sms.
Perhaps they were put there for the upcoming 3g enabled.models.
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
So how can i stop those services? My TF is unrooted.

GloriosoPT said:
So how can i stop those services? My TF is unrooted.
Click to expand...
Click to collapse
Tried to stop them via settings but they won't close.
Afraid u need to root.

Good find. Would help if you editted your original post with this solution. Hopefully this is fixed in 3.2.

So I guess this gives me another reason to root my tf101. Battery life is very important to me. This is the reason I got the tf101 with a dock so that I can get the full battery life of 16 hrs.

Canadoc said:
OK I have solved this!!
... Then with titanium backup I froze the following to programs preventing them from running:
Mobile data and mobile network configuration.
Click to expand...
Click to collapse
Thank you so much!
This is a great find. I just got my TF four days ago, so I haven't payed attention to battery usage, etc., but I performed these steps, so I hope to get maximum battery performance.
I also changed wireless settings to "turn off when screen is off".
This is why I love XDA.

Canadoc said:
Then with titanium backup I froze the following to programs preventing them from running:
Mobile data and mobile network configuration.
Click to expand...
Click to collapse
Hmm, was looking around in Titanium - how do you freeze (prevent a prog from starting) an app?
Okay, found "deactivate" - this is the "freezer" ?

Battery problems?

My new note's battery seem weird after I let it run to 1% and then charge up to 100%.
After that, it seems to lose battery very much faster.
Left overnight, it went from 79% to 49%!! a 30% drop!!
I checked Battery status report battery health is good and average 33-35 degrees temperature.
Bulk of battery usage is reported for Display (62%, "time on" of 1hr 30m) ...
Is this normal??
What can I do?
Thanks.

Maybe the battery needs some recalibration, run it down to 1% then charge the phone while its still off.

Here's the battery level profile...
Not sure what is keeping the phone awake even while screen-off??
Any help or advice to diagnose and resolve the battery issues appreciated.

planetcooler said:
Here's the battery level profile...
Not sure what is keeping the phone awake even while screen-off??
Any help or advice to diagnose and resolve the battery issues appreciated.
Click to expand...
Click to collapse
Try a factory reset and then calibrate the battery.

Just woke up after the first night with the Note. I had 45% battery left when i went to bed, and now 9 hours later it's at 43%.
Sent from my GT-N7000 using xda premium

planetcooler said:
Not sure what is keeping the phone awake even while screen-off??
Click to expand...
Click to collapse
You diagnosed the problem correctly by identifying the device being awake while the screen is off. I suggest two tools to narrow it down:
1. Cpu Spy, Market, free, displays how much time the CPU spent in the different power states. During the night it should almost completely be in deep sleep.
2. BetterBatteryStats, Market, ~2.50$, allows to identify apps with wakelocks, apps which prevent the system to enter the deep sleep power state while the screen is off and the device basically is idleing. On CM Spareparts xan do that for free, for Samsung devices I first have to find a free alternative app that works...
No wipe needed (yet), no delete this or do that. First find the villain, then shoot em, not the other way round.
Sent from my GT-N7000

Installed BetterBatteryStats,
but there is lots of information, and I have little clue what these constitute or how to identify what apps cause the issues??

You could post screenshots of all the screens of betterbatterystats and we will try to help you.
Charge the phone to 100% and disconnect it right before you go to sleep, enter cpuspy and reset its counters. Then enter task manager and kill all the programs and clean the memory. Now go to sleep and when you wake up post screenshots of the built in battery stats, betterbatterystats and cpuspy.

Hi
I have a similar problem, my battery keeps draining entirely too much for what I think it should. Mine gets drained about 40% in about 10 hours of very light use.
BetterBatteryStats shows it is WiFi that has a humongous amount of wakelocks, but the thing here is I have WiFi disabled.
Image (BetterBatteryStats): http://antti.vahtera.org/images/SC20111221-020623.png
CPU Spy shows nothing that looks that weird to me, although I rather wonder why so little deep sleep and so much 200MHz, but that might be if deep sleep has a longer "counter" than it did on SGS/SGS2. If I use the phone to check time, or twitter from a widget couple of times per hour, does SGN enter deep sleep during those "breaks"?
Image (CPU Spy): http://antti.vahtera.org/images/SC20111221-020441.png
But, the one that caught my eye, was the stock Battery Info window. During the (almost) entire 10h time the phone was awake?! Why in the whole wide world? Does SGN really have some bug with WiFi keeping it awake even though it is disabled?
Image (Battery Info -window): http://antti.vahtera.org/images/SC20111221-020744.png
I really wanna get behind this. I love this phone, but this battery drainage begins to be a problem for me. I got about 2-5% drain per night with SGS2 and 10-15% per day on similar usage.

AnttiV said:
Hi
I have a similar problem, my battery keeps draining entirely too much for what I think it should. Mine gets drained about 40% in about 10 hours of very light use.
BetterBatteryStats shows it is WiFi that has a humongous amount of wakelocks, but the thing here is I have WiFi disabled.
Image (BetterBatteryStats): http://antti.vahtera.org/images/SC20111221-020623.png
CPU Spy shows nothing that looks that weird to me, although I rather wonder why so little deep sleep and so much 200MHz, but that might be if deep sleep has a longer "counter" than it did on SGS/SGS2. If I use the phone to check time, or twitter from a widget couple of times per hour, does SGN enter deep sleep during those "breaks"?
Image (CPU Spy): http://antti.vahtera.org/images/SC20111221-020441.png
But, the one that caught my eye, was the stock Battery Info window. During the (almost) entire 10h time the phone was awake?! Why in the whole wide world? Does SGN really have some bug with WiFi keeping it awake even though it is disabled?
Image (Battery Info -window): http://antti.vahtera.org/images/SC20111221-020744.png
I really wanna get behind this. I love this phone, but this battery drainage begins to be a problem for me. I got about 2-5% drain per night with SGS2 and 10-15% per day on similar usage.
Click to expand...
Click to collapse
yeah, there's something seriously wrong with your phone. Are you rooted ? would you consider a full wipe and maybe a different ROM ?

Not rooted, not modified in any serious way either. (Using GO Launcher EX, not TouchWiz launcher, that's really the extend of modification on this phone.)
Android version is 2.3.6, Baseband N7000XXKK5, kernel 2.6.35.7-N7000XBKK4
This is what was shipped with the phone. It's unbranded and unlocked.
I haven't really done anything to it but installed apps from Android Market (and a couple with Samsung Apps).
EDIT: This is my day-to-day phone with all settings as I like them and all things set, so I would like if I wouldn't have to do a full wipe. But if nothing else helps, I guess I'll have to, in the end.

I hope someone will be able to help you cause I've never seen anything like that.
Sent from my GT-N7000 using Tapatalk

This might help...
I had the same problem. The first night my Note was dropping from 100% down to about 50% when I was asleep and the screen was off.
In the battery stats I could see that it was the Android core that used all this power.
So I tried a couple things to see if it helped:
1) I went to WiFi-settings and set it to turn off WiFi when screen off. This is a setting that is not on by default, you have to set it yourself.
2) I turned off AutoSync (Google account and so on)
Those to settings removed the overnight powerdrain problem. The next night it only went from 100% to about 98% when I slept
And since I am a serious betterysaver I also turned off autolight on screen, and set it to lowest light possible (still nice picture). I turned on the "Autoadjust screenpower), turned off all animations, turned off all kind of vibrations on the phone.
I left the"System powersetting" alone. It didnt save much power and it made the phone slower.
All in all, now my battery is great, I still have lot of juice left after a full day of using my Galaxy Note

I seem to have fixed my problem, without having to do a full wipe. I don't know which part it was that finally did it, but I'm glad it now behaves like I think it should. (about 2% battery drain in ~5h in pocket, one 1min phonecall and two or three times checking time from lockscreen.)
Anyway, I apparently ALSO had the infamous problem with Mediaserver eating humongous amounts of battery, so I'm not sure if that had anything to do with the WiFi keeping it awake or was just a separate problem.
Long story short, here's what I did:
a) installed JuiceDefender, had it manage Wifi
b) turned Wifi on, restart
c) turned Wifi off, restart
[d) installed nomedia manager and excluded most directories from mediascanner]
e) turned phone off, recharged to 100%.
Seems to be working now. No WiFi wakelocks, no mediaserver eating CPU, deep sleep ~70% of the time.

[Q] Battery drain in deep sleep

Hello,
I am asking this question as to confirm if my tablet needs to be sent to warranty or this is a normal behavior to you other people reading this post.
I have stock 4.2.1 rooted on a nexus 7 16gb version
When I lock the screen the device enters deep sleep => I can verify this by using CPU Spy, it says that in 30min of screen off, 28 minutes were spent in deep sleep
Using Battery monitor widget with refresh rate at 1min I can look at the log and see that the tablet had a constant drain of 50 to 94 mah during those 30 minutes. Only after 2-3 hours the device starts to have a drain of 2-3 mah (if the screen is off)
Wireless, Bluetooth, Gps are turned off.
If you think I may have omitted some things in my test procedure please share some info, otherwise please tell me if you also encounter this problem
A good day !

background apps could cause drain, not even apps you opened. like the facebook app is notorious for it.

simms22 said:
background apps could cause drain, not even apps you opened. like the facebook app is notorious for it.
Click to expand...
Click to collapse
Hmm, normally when I had the HTC HD2 when it was in deep sleep it had a drain of 2-3mah - battery monitor widget was checking every 1min
Now with the Nexus 7 the drain is 50-94 in deep sleep, do you think this would be a normal behavior ?

I can relate
I get the same type of behavior on my Nexus 7 16GB wifi only model. Mine does not seem to be due to an app either, as the main battery use is Google related (Play store, or Google services, etc.). Take today for example. I charged my Nexus 7 overnight, verified that it was reporting fully charged when I got up, then I put it to sleep and set it aside to take to work and didn't use it again. When I got to work 2.5 hours later I turned it on and it was at about 83% battery. I lost almost 20% battery in 2.5 hours without even using the tablet. I attached a screenshot - today's culprit was Android OS (I took the screenshot a couple of hours later at work). This behavior started after upgrading to 4.2 - it never did this on 4.1.
Oddly enough, I don't get this type of drain if there's no wifi connection, even if wifi is left on and there's a wifi signal that it's just not connected to. When I get someplace with wifi, the battery drain starts again.

GSam Battery Monitor Screen Usage?

Every night, my battery is drained by 7-8% even though, GPS, WiFi, all radios are off and the phone is in airplane mode (done automatically via LLama scripts). I installed GSam Battery Monitor to try to figure out what was going on and it indicated that even though the screen was dark, it was draining the battery (and was the primary culprit). Is this accurate or is it a bug? Anyone else seeing something like this on their Nexus 4?

Mine shows 78% usage in dark.. I think that just means how much of battery total it was used while the phone screen was off. I'm taking a completely random guess here though.

mrlad said:
Every night, my battery is drained by 7-8% even though, GPS, WiFi, all radios are off and the phone is in airplane mode (done automatically via LLama scripts). I installed GSam Battery Monitor to try to figure out what was going on and it indicated that even though the screen was dark, it was draining the battery (and was the primary culprit). Is this accurate or is it a bug? Anyone else seeing something like this on their Nexus 4?
Click to expand...
Click to collapse
So you reset the app right before going to bed and checked it first thing in the morning and in the 7 hours you slept, the main battery drain came from the screen?
I use the same app and I never noticed anything wrong. Still, battery readings are not always accurate... sometimes when I recharge my phone, it stays 100%for a few hours, then it drops 7-10% in a matter of an hour...and that's completely normal I say you shouldn't worry about it too much as long as you get satisfying usage times..

0rigin said:
I say you shouldn't worry about it too much as long as you get satisfying usage times..
Click to expand...
Click to collapse
I'm not happy w/battery life and trying to track down what the culprit is. If all major services are off at night, 7-8% battery drain doesn't seem normal to me. Granted this is apples and oranges, but my iPad Gen 3 in the same configuration remains at 100% overnight.
If doing nothing drains nearly 10% over 6-7 hours, no surprise I've got issues during the day.

I've noticed the same thing, one time I didnt turn the screen on on my phone, then I went to screen and it showed 0% discharge while screen on, and 7% discharge while off. I'm running the latest version of Viper, I'm also confused and I wonder if theres some issue where maybe power is being sent to the screen even though it's not on.
mrlad said:
I'm not happy w/battery life and trying to track down what the culprit is. If all major services are off at night, 7-8% battery drain doesn't seem normal to me. Granted this is apples and oranges, but my iPad Gen 3 in the same configuration remains at 100% overnight.
If doing nothing drains nearly 10% over 6-7 hours, no surprise I've got issues during the day.
Click to expand...
Click to collapse

After my 7 hours sleep.. Every morning my phone uses 2% battery drainage at MAX. i.e.: Wifi Edge Sync etc ALL OFF. And I am getting 4+ screen time on my phone with moderate usage. Pretty happy with the battery life so far.

Hi
mrlad said:
Every night, my battery is drained by 7-8% even though, GPS, WiFi, all radios are off and the phone is in airplane mode (done automatically via LLama scripts). I installed GSam Battery Monitor to try to figure out what was going on and it indicated that even though the screen was dark, it was draining the battery (and was the primary culprit). Is this accurate or is it a bug? Anyone else seeing something like this on their Nexus 4?
Click to expand...
Click to collapse
Your phone probably isn't going into sleep. The Nexus 4 seems to be prone to insomnia caused by apps that don't cause a problem on other devices.
To check this download CPU Spy from the play store. Run it, reset timers to zero, and with the phone on battery (i.e. not on charge) let it rest for 30 minutes or so, then check the figures.
You should see Deep Sleep as > 90%, if not, or it is listed as an unused state, your phone isn't sleeping.
To fix this you either work forward or backwards!
Work forward:
Factory reset, install CPU Spy, run the test and see your phone is now deep sleeping.
Start installing applications one by one and after each install, run the app, then run the CPU Spy test again.
Eventually you will find the app causing the problem, all you can do is avoid that app. Note you may have more than one app causing a problem so keep checking after each install.
Work backwards:
Start by un-installing an app at a time restarting your phone in between then running a CPU Spy test. Start with any live wallpapers (even if not set to be used) you have installed, then any weather widgets. Note just un-installing is not enough, you must restart after each one.
Eventually your phone will start deep sleeping again so finding the problem app.
Hope that helps.
Regards
Phil

I tried your advice, and my phone is going into deep sleep around 90% of the time, so I don't think that it's a rogue app. I keep my phone on the dimmest setting at all times, and I only get 2.5 hours of screen on time. I have an anker battery.
PhilipL said:
Hi
Your phone probably isn't going into sleep. The Nexus 4 seems to be prone to insomnia caused by apps that don't cause a problem on other devices.
To check this download CPU Spy from the play store. Run it, reset timers to zero, and with the phone on battery (i.e. not on charge) let it rest for 30 minutes or so, then check the figures.
You should see Deep Sleep as > 90%, if not, or it is listed as an unused state, your phone isn't sleeping.
To fix this you either work forward or backwards!
Work forward:
Factory reset, install CPU Spy, run the test and see your phone is now deep sleeping.
Start installing applications one by one and after each install, run the app, then run the CPU Spy test again.
Eventually you will find the app causing the problem, all you can do is avoid that app. Note you may have more than one app causing a problem so keep checking after each install.
Work backwards:
Start by un-installing an app at a time restarting your phone in between then running a CPU Spy test. Start with any live wallpapers (even if not set to be used) you have installed, then any weather widgets. Note just un-installing is not enough, you must restart after each one.
Eventually your phone will start deep sleeping again so finding the problem app.
Hope that helps.
Regards
Phil
Click to expand...
Click to collapse