[Q] Battery Life - Shield Tablet Q&A, Help & Troubleshooting

Alright, I think I might be having some issues, and I was wondering what your battery life like?
I charged mine earlier this week, used it a little bit after I pulled it off the charger and have barely touched it since. This morning when I went to go and watcha Youtube Video, my tablet was completely dead. Now I used it about 2 days ago and it still had over a 40% charge. To me it seems odd that the tablet drained over 40% just sitting there for 2 days.
I checked the battery manager for some statistics and the most battery draining services were the Screen at 34%, Tablet Idle at 22% and Android OS at 18%. I am not sure if this is normal for the Shield Tablet or if I might have something stuck running in the background or might even have a defective unit.
So I guess my question for you guys other than what your battery life is like, is do you think this is normal? Or should I try a factory rest? Any other suggestions? Returning it to BestBuy is an option as I bought it about a week and a half ago.
Thanks for the tips

menendez1293 said:
Alright, I think I might be having some issues, and I was wondering what your battery life like?
I charged mine earlier this week, used it a little bit after I pulled it off the charger and have barely touched it since. This morning when I went to go and watcha Youtube Video, my tablet was completely dead. Now I used it about 2 days ago and it still had over a 40% charge. To me it seems odd that the tablet drained over 40% just sitting there for 2 days.
I checked the battery manager for some statistics and the most battery draining services were the Screen at 34%, Tablet Idle at 22% and Android OS at 18%. I am not sure if this is normal for the Shield Tablet or if I might have something stuck running in the background or might even have a defective unit.
So I guess my question for you guys other than what your battery life is like, is do you think this is normal? Or should I try a factory rest? Any other suggestions? Returning it to BestBuy is an option as I bought it about a week and a half ago.
Thanks for the tips
Click to expand...
Click to collapse
I'd try to manage background applications with Greenify. You'd have some more options like BootManager if you have root. Don't worry, root will disappear upon factory reset if needed for returns. Besides those two controlling agents, there is a flashable MOD I discovered recently called ComoDose 3.5 here on XDA. With all three, my S3 hits the bed as soon as I turn off the screen, boosting idle time tremendously. You'd need to go a step further and install a custom recovery to try ComoDose; if you have any issue and need to return, there is already a guide here on how to get rid of it. So don't worry about that!
Most likely, your device just isn't going to sleep. I don't think it's unusual.

Settings > Shield Power Control > Apps tab:
Let Nvidia Optimize everything. It seems to end up saving me a ton of battery life. Using apps that don't need much power (like Cheezburger, G+, Udemy, Play Store, etc...), the Nvidia governor seems to handle the clocking very well. Then it cranks it up as needed with games (I bought a few that are listed in the Shield games thing).
You just need to remember to go in and optimize new apps that you install. By default it doesn't put a governor profile on them, so the apps just run as Android tells them to, instead of how Nvidia profiles them.
I've been charging my Shield Tablet about once every two days. That's maybe an hour of gaming a day, and a lot of web browsing, and various forum reading, and whatever other random stuff I do during the day.

The pre-installed app Camera Awesome installs a bunch of corrupt jpg's to internal storage. While they are their it causes the "media server" service to keep running constantly in a loop. Was so bad that while plugged in, my battery went down while actively using the tablet. Since I removed those corrupt jpg's the battery has been fine. So step 1, check for corrupt jpgs.

Harfainx said:
Settings > Shield Power Control > Apps tab:
Let Nvidia Optimize everything. It seems to end up saving me a ton of battery life. Using apps that don't need much power (like Cheezburger, G+, Udemy, Play Store, etc...), the Nvidia governor seems to handle the clocking very well. Then it cranks it up as needed with games (I bought a few that are listed in the Shield games thing).
You just need to remember to go in and optimize new apps that you install. By default it doesn't put a governor profile on them, so the apps just run as Android tells them to, instead of how Nvidia profiles them.
I've been charging my Shield Tablet about once every two days. That's maybe an hour of gaming a day, and a lot of web browsing, and various forum reading, and whatever other random stuff I do during the day.
Click to expand...
Click to collapse
Just did that this morning while it was on the charger, hopefully it makes a difference like it did to you.
daeymon said:
The pre-installed app Camera Awesome installs a bunch of corrupt jpg's to internal storage. While they are their it causes the "media server" service to keep running constantly in a loop. Was so bad that while plugged in, my battery went down while actively using the tablet. Since I removed those corrupt jpg's the battery has been fine. So step 1, check for corrupt jpgs.
Click to expand...
Click to collapse
Now that you mention it, I did have the media server service running and taking up battery. I guess I will delete the pictures I have and replace it with a different (Google) Camera. Thanks for the tip.

daeymon said:
The pre-installed app Camera Awesome installs a bunch of corrupt jpg's to internal storage. While they are their it causes the "media server" service to keep running constantly in a loop. Was so bad that while plugged in, my battery went down while actively using the tablet. Since I removed those corrupt jpg's the battery has been fine. So step 1, check for corrupt jpgs.
Click to expand...
Click to collapse
Its still too early to call but I think you hit the nail on the head with this one! I wasn't getting drain with the screen off but it was draining really fast with the screen on. Thank you so much for this suggestion of deleting these corrupt files because right now my battery is finally draining like it should.. nice and slow. Thank You!!

dukehazard77 said:
Its still too early to call but I think you hit the nail on the head with this one! I wasn't getting drain with the screen off but it was draining really fast with the screen on. Thank you so much for this suggestion of deleting these corrupt files because right now my battery is finally draining like it should.. nice and slow. Thank You!!
Click to expand...
Click to collapse
How is your screen on before and after deleting the corrupt files? Would you mind posting screens or stats
Sent from my GT-I9505G using XDA Free mobile app

daeymon said:
The pre-installed app Camera Awesome installs a bunch of corrupt jpg's to internal storage. While they are their it causes the "media server" service to keep running constantly in a loop. Was so bad that while plugged in, my battery went down while actively using the tablet. Since I removed those corrupt jpg's the battery has been fine. So step 1, check for corrupt jpgs.
Click to expand...
Click to collapse
Hi,
Where exactly on internal storage I can find those corrupted files?
I would like to give it a try.
Thanks in advance.

pghostek said:
Hi,
Where exactly on internal storage I can find those corrupted files?
I would like to give it a try.
Thanks in advance.
Click to expand...
Click to collapse
Android/data/com.smugmug.android.cameraawesome
Check any sub folders in that folder as well.
There are apps you can get which will scan your device for corrupt image files too.

I'm not an android expert, so apologies if I say anything out of turn.
I think the .jpegs appeared to be corrupt as some of them might have been for the 'picture frames' of the camera awesome 'special effects'. Thus they are 'transparent' in the centre of the image.
I had some in the Android/data/com.smugmug.android.cameraawesome/downloads directory.
I read an article, which said if you add an empty .nomedia file to the directory it should stop the media service from reading from it.
Would adding that file not be enough to stop the media service, rather than deleting all the files?

Silverfox476 said:
I'm not an android expert, so apologies if I say anything out of turn.
I think the .jpegs appeared to be corrupt as some of them might have been for the 'picture frames' of the camera awesome 'special effects'. Thus they are 'transparent' in the centre of the image.
I had some in the Android/data/com.smugmug.android.cameraawesome/downloads directory.
I read an article, which said if you add an empty .nomedia file to the directory it should stop the media service from reading from it.
Would adding that file not be enough to stop the media service, rather than deleting all the files?
Click to expand...
Click to collapse
I had similar problem. I deleted all the jpg files, infact deleted the entire folder,Android/data/com.smugmug.android.cameraawesome/downloads directory. However, everytime i opened camera app, the folder generated itself (check in ES file explorer). Better option is to disable the app (you cant delete as its a system app) and use google camera or any other camera of choice. My battery life has increased (screen on and off) i get about 4 hours of screen on time (lot of browsing, drawing, you tube and 40 mins of gaming). Its not as much as others are getting. Also i am not rooted. On a side note Lollipop is coming in couple of days, it should alleviate some battery issues.''

I have a problem with battery life. Was at 100% this morning 11am, now it is 3h20 pm and there is only 58% remaining.
The problem is it was in my bag between this morning and now and it has not been used... WiFi is set to be off while screen is off, and is not available for location when wifi deactivated. Nvidia camera is disabled. I will do a factory reset to see how it goes...
If I go to battery menu : it show only one line : screen, 1%, which of course is impossible.
EDIT : ok, it is unusable with such battery life... Since I bought it yesterday, I decided to do a factory reset and to NOT restore anything from other devices.
I'm currently charging it and will make a report later.

Judge584 said:
I have a problem with battery life. Was at 100% this morning 11am, now it is 3h20 pm and there is only 58% remaining.
The problem is it was in my bag between this morning and now and it has not been used... WiFi is set to be off while screen is off, and is not available for location when wifi deactivated. Nvidia camera is disabled. I will do a factory reset to see how it goes...
If I go to battery menu : it show only one line : screen, 1%, which of course is impossible.
EDIT : ok, it is unusable with such battery life... Since I bought it yesterday, I decided to do a factory reset and to NOT restore anything from other devices.
I'm currently charging it and will make a report later.
Click to expand...
Click to collapse
EDIT 2: time to RMA. Yesterday : a factory reset, no google account configured and charged at 100% , airplane mode. 8hours later ( this morning) , shield shutdown itself during night. So bad.

Judge584 said:
EDIT 2: time to RMA. Yesterday : a factory reset, no google account configured and charged at 100% , airplane mode. 8hours later ( this morning) , shield shutdown itself during night. So bad.
Click to expand...
Click to collapse
Are you on lollipop or kitkat?

Lollipop. Is that the problem ?

Judge584 said:
Lollipop. Is that the problem ?
Click to expand...
Click to collapse
I Still dunno. I'm waiting to be able to flash the kitkat firmware. I bought shield 3 days ago registered to nvidia dev site just today. Let's see

I bought it Wednesday and received 4 OTA updates without registering to dev site

Judge584 said:
I bought it Wednesday and received 4 OTA updates without registering to dev site
Click to expand...
Click to collapse
So it worked as intended lol I need to be registered and agreed to dev site to be able to download the firmwares

But do you have same problem as me?

I've not had any battery issues and I'm running Lollipop.
I have set my screen brightness to Auto (Screen On uses up a lot of juice).
Using the "Shield Power Mode" I've set the "Processor Mode" to "Optimise".
Under the Advanced Wifi options I've turned off "Network Notification", I've left "Scanning Always available" on, and set "Keep Wifi on during sleep" to "Only when plugged in".
Finally in Android/data/com.smugmug.android.cameraawesome/downloads I've made sure there is the empty .nomedia file.

Related

Holy Jeeebus.....I think I finally solved my battery problem. Yours too??

TL: DR - Use Rescan Media, win.
So, I think that I've finally found the source of my constant stress regarding the battery life of my beautiful Samsung Captivate SGH-i897.
I know that a good majority of you have just rolled your eyes in disbelief, or just thought to yourself, "Great....another one of these threads".
If it helps one person get their battery life under control, then roll away.
I've had the phone for about 2-3 months and I've been active on these boards since a few days after getting it.
I've recalibrated, done the on / off / on / off trick, battery stats delete, deleted battery info from CWM, tried a second battery, used battery monitors on the phone, turned off wi-fi, turned off auto-synch, turned off bluetooth, lowered display brightness, and everything else I could think of to conserve juice.
Yesterday afternoon, I downloaded OSMonitor from the market in an effort to try another app in a long line of failures.
Nothing seemed out of the ordinary so I was going to give up hope.
While installed, I had clicked on the box to monitor the app in the notification bar.
I noticed that I would have times where the CPU was being maxed but nothing strange was being reported in OSMonitor.
And then it hit me.....
The entire time I'm watching the OSMonitor, I'm being distracted by the media scanner.
It's running over and over and over and over and over.
When the screen shuts off after 30 seconds, it comes back on, the media scanner runs.
When I update something from the market, the media scanner runs.
When I close a program, the media scanner runs.
It is running constantly and maxing my CPU to 100%.
It finishes fairly quickly, (I have 9.4GB / 13GB available on internal and hardly anything used on my 4GB external SD card) but it just KEEPS....ON.....RUNNING.
I do a quick search, stumble upon the .nomedia file trick from XDA archives, and VOILA ! ! ! !
I'm losing about only one half of one percent per hour while it sits on standby, where I would sometimes lose 10-11% per hour, when the phone isn't even being used by me.
I went to bed last night with 48% at around 3:30am.
It is approx. 11 hours later right now.
I've made approx. 8-10 calls, checked my email a few dozen times, and mostly just let the phone sit.
I'm sitting at 39%.
Previous to doing this, I would have lost that amount in one hour.
So, for anyone who has a phone that is losing battery life like it's going out of style, I highly recommend doing the .nomedia fix.
I did mine using ES Explorer and Super Manager.
Go into your root folder and add a file named .nomedia, then go into your external SD folder and do the exact same thing.
If you do not want to do it this way, you can go the easy route and add a program called Rescan Media that does it for you.
(link supplied)
Hopefully this helps at least one lost soul, I'm so happy to see my phone behave more along the lines of what my expectations were and not have to be fully charged 2 times per day.
For the record, I've tried the following ROM's for the Cappy:
Perception
Phoenix
Assonance
Darkytt3r's port of Darky's ROM
Stock ROM (ODIN Rooted)
Cognition
And the following kernels:
Glitterballs
SpeedMod
SetiroN
Xcalibur
Will this not cause the media scanner to not pick up anything at all then?
IE no custom ringtones/msg alerts, nothing displayed in gallery, playlists wont work with the music player....
Or will it run media scanner selectively instead of all the time?
The only time I notice media scanner running is after rebooting the phone... yet I'm still only getting about 9-10 hours on a full charge with very conservative use.
evoic said:
TL: DR - Use Rescan Media, win.
So, I think that I've finally found the source of my constant stress regarding the battery life of my beautiful Samsung Captivate SGH-i897.
I know that a good majority of you have just rolled your eyes in disbelief, or just thought to yourself, "Great....another one of these threads".
If it helps one person get their battery life under control, then roll away.
I've had the phone for about 2-3 months and I've been active on these boards since a few days after getting it.
I've recalibrated, done the on / off / on / off trick, battery stats delete, deleted battery info from CWM, tried a second battery, used battery monitors on the phone, turned off wi-fi, turned off auto-synch, turned off bluetooth, lowered display brightness, and everything else I could think of to conserve juice.
Yesterday afternoon, I downloaded OSMonitor from the market in an effort to try another app in a long line of failures.
Nothing seemed out of the ordinary so I was going to give up hope.
While installed, I had clicked on the box to monitor the app in the notification bar.
I noticed that I would have times where the CPU was being maxed but nothing strange was being reported in OSMonitor.
And then it hit me.....
The entire time I'm watching the OSMonitor, I'm being distracted by the media scanner.
It's running over and over and over and over and over.
When the screen shuts off after 30 seconds, it comes back on, the media scanner runs.
When I update something from the market, the media scanner runs.
When I close a program, the media scanner runs.
It is running constantly and maxing my CPU to 100%.
It finishes fairly quickly, (I have 9.4GB / 13GB available on internal and hardly anything used on my 4GB external SD card) but it just KEEPS....ON.....RUNNING.
I do a quick search, stumble upon the .nomedia file trick from XDA archives, and VOILA ! ! ! !
I'm losing about only one half of one percent per hour while it sits on standby, where I would sometimes lose 10-11% per hour, when the phone isn't even being used by me.
I went to bed last night with 48% at around 3:30am.
It is approx. 11 hours later right now.
I've made approx. 8-10 calls, checked my email a few dozen times, and mostly just let the phone sit.
I'm sitting at 39%.
Previous to doing this, I would have lost that amount in one hour.
So, for anyone who has a phone that is losing battery life like it's going out of style, I highly recommend doing the .nomedia fix.
I did mine using ES Explorer and Super Manager.
Go into your root folder and add a file named .nomedia, then go into your external SD folder and do the exact same thing.
If you do not want to do it this way, you can go the easy route and add a program called Rescan Media that does it for you.
(link supplied)
Hopefully this helps at least one lost soul, I'm so happy to see my phone behave more along the lines of what my expectations were and not have to be fully charged 2 times per day.
For the record, I've tried the following ROM's for the Cappy:
Perception
Phoenix
Assonance
Darkytt3r's port of Darky's ROM
Stock ROM (ODIN Rooted)
Cognition
And the following kernels:
Glitterballs
SpeedMod
SetiroN
Xcalibur
Click to expand...
Click to collapse
So... exactly what did you do to solve the problem? can you describe how do you do the .nomedia fix?? I have exactly the same issue..
Hm, I haven't experienced that bad of a battery drain, but I installed the market app even though it said 2.2... maybe this will make my battery life better! Thanks for the tip.
It's running over and over and over and over and over.
When the screen shuts off after 30 seconds, it comes back on, the media scanner runs.
When I update something from the market, the media scanner runs.
When I close a program, the media scanner runs.
It is running constantly and maxing my CPU to 100%.
It finishes fairly quickly, (I have 9.4GB / 13GB available on internal and hardly anything used on my 4GB external SD card) but it just KEEPS....ON.....RUNNING.
Click to expand...
Click to collapse
When you say the media scanner runs when doing all of these actions, does the Media Scanning icon show in the notification bar? If so, then I think it's just an issue with your phone cause I don't think that happens with anyone else's phone.
Unless you are saying that the media scanner runs in the background secretly after every action and there is no icon in the notification bar or anything? If so, I think you can be on to something.
GTIVRon said:
Will this not cause the media scanner to not pick up anything at all then?
IE no custom ringtones/msg alerts, nothing displayed in gallery, playlists wont work with the music player....
Or will it run media scanner selectively instead of all the time?
The only time I notice media scanner running is after rebooting the phone... yet I'm still only getting about 9-10 hours on a full charge with very conservative use.
Click to expand...
Click to collapse
You could just run Media Scanner manually. SwitchPro even gives you a button to initiate it. The only time Media Scanner runs automatically for me is when the phone boots (and probably some other infrequent times that I can't remember) so disabling automatic media scanning isn't much of a loss at all for me.
GTIVRon said:
Will this not cause the media scanner to not pick up anything at all then?
IE no custom ringtones/msg alerts, nothing displayed in gallery, playlists wont work with the music player....
Or will it run media scanner selectively instead of all the time?
Click to expand...
Click to collapse
I'm curious of the same thing. I've only seen the media scanner run when I restart or disconnect my SD card from my computer.
trekie86 said:
I'm curious of the same thing. I've only seen the media scanner run when I restart or disconnect my SD card from my computer.
Click to expand...
Click to collapse
trying to get it working... ill report wassup after...
minlee85 said:
evoic said:
TL: DR - Use Rescan Media, win.
...
I did mine using ES Explorer and Super Manager.
Go into your root folder and add a file named .nomedia, then go into your external SD folder and do the exact same thing.
If you do not want to do it this way, you can go the easy route and add a program called Rescan Media that does it for you.
(link supplied)
...
Click to expand...
Click to collapse
So... exactly what did you do to solve the problem? can you describe how do you do the .nomedia fix?? I have exactly the same issue..
Click to expand...
Click to collapse
I'll be nice... see the quoted paragraph that was in your quote?
Minlee, no need to quote an entire post, especially when you aren't responding to something in it directly.
As others have said, I only ever see Media Scanning in the Notification bar when I do a reboot. If it runs at other times it is transparent to the phone.
This is probably an issue specific to myself and a few others.
Someone above asked me if I saw a lot of activity in the background or if I actually saw the "Media Scanning" icon pop up in my notification bar.
The answer is that I saw the icon pop up and then watched it scan, over and over and over, all day long, dozens....if not hundreds of times.
That little fix, coupled with the battery calibration that I've done a few times, along with getting rid of some of the resource hogs that run in the background (Do I reeeeally need Google Maps to run 23 hours out of the day???) has given my Captivate new life.
evoic said:
This is probably an issue specific to myself and a few others.
Someone above asked me if I saw a lot of activity in the background or if I actually saw the "Media Scanning" icon pop up in my notification bar.
The answer is that I saw the icon pop up and then watched it scan, over and over and over, all day long, dozens....if not hundreds of times.
Click to expand...
Click to collapse
Yeah, I've never seen that kind of behavior. I only see the scanning activity when I first boot and when I do something like take a picture or a screen shot.

Android System consuming battery

I have been obessing over my battery stat page and am trying to figure out what exactly "Android System" is. It is usually consuming the highest percentage of battery power. I have tried everything to figure out what action exactly makes Android System get added to the battery stats page. I have disabled everything, every radio, syncing, deleted all widgets. I hardly have any apps as it is. It just seems rather inconsistent because sometimes Ill check the page after making a call and will find that Voice calls has consumed a small percentage of battery and Android System isn't even on the list. Other times I will take it off the charger and make a 30 minute call, but when I check the stats page 70% battery was used by Android System and only 3% was Voice Calls.
Can anyone tell me exactly what triggers Android System so I can make sure I cut down on its battery usage in any way possible
Sent from my Microwave
I assume you are looking in the settings > about phone > battery. You can select android system also and it will tell you more info.
Agoattamer said:
I assume you are looking in the settings > about phone > battery. You can select android system also and it will tell you more info.
Click to expand...
Click to collapse
I see that but under more info its not very clear about what's using the batt.
Sent from my Microwave
http://img.photobucket.com/albums/v673/seh6183/screenshot-1312932238053.png
Sent from my Microwave
Anyone have any comments on this?
Sent from my Microwave
Did a battery calibration and now android system isn't the number 1 thing consuming battery as usual. Weird:
http://img.photobucket.com/albums/v673/seh6183/testshot.png
This seems to be more in line with what normal battery usage should look like in my opinion.
Sent from my Microwave
I had this problem too until I did a calibration. Now cell standby consumes over 50% of my battery regularly, with android system consuming only 2%.
Sent from my HTC Inspire 4G using XDA App
Yea I did a calibration and all is well
http://img.photobucket.com/albums/v673/seh6183/screenshot-1313102466360.png
Thank you
Sent from my Microwave
Aaaaaaaaand were back LOL
http://img.photobucket.com/albums/v673/seh6183/screenshot-1313118381659.png
Sent from my Microwave
Its still occurring
What would you guys do?
Android system will occasionally use CPU as well, as shown in the following screenshots. Also! My good buddy let me see his Droid x recently. He had 42% battery life left and android system had only taken up 4% of that.
I'm pretty upset about this.
http://img.photobucket.com/albums/v673/seh6183/screenshot-1314312490137.png
http://img.photobucket.com/albums/v673/seh6183/screenshot-1314312473018.png
http://img.photobucket.com/albums/v673/seh6183/screenshot-1314312512785.png
Sent from my Microwave
If you asked me I would say all your values are a little screwy. Do you even turn the screen on, on your phone and use it? If you use your phone the Display should be by far the most used. To me it looks like you physically use your phone very little. That is why Phone idle and Android System seem to be the higher numbers.
Guessing you have many accounts syncing in the background. One of the biggies for Android System. So its not that Android System is using so much, the rest of the processes are using so little.
Oddly enough the same thing started happening with my phone recently too.
@Agoattamer
The system wouldn't eat most of the charge in less than 8 hours in normal circumstances. Also about your question concerning accounts, while I'm not seh6183, personally I only have my email account synchronizing and the very same thing happens.
Something is causing the CPU to remain awake, in my case stuck at 800MHz.
The factory reset will most likely solve it, but it'd be best to find the culprit to just try and rectify a specific anomaly rather than reinstalling the whole system.
Has recently any core Google apps been updated? Email, Maps, anything?
I do agree that in 8 hours of non physical use your battery should not be going dead. So I couldn't sleep last night and I did some google searching. Here are some things I found out.
Do you have Googles Goggles installed? Seems it may have a bug where it keeps the camera on even when the phone is supposedly asleep.
Seeing that seh6183 always has his wifi active maybe it has something to do with wifi. I found this from Juri's TechBlog
couple of days ago I finally got the eagerly awaited system upgrade to Gingerbread on my Nexus One. The update went pretty well, although some Nexus One users reported about problems with the updating process. The only thing I noticed is that Dropbox didn't work after the upgrade.
A re-install solved the issue. All-in-all Gingerbread is great. Beside UI enhancements it feels also faster than Froyo. However, after trying it for two days now, I noticed a substantial increase in battery consumption. By looking at the system battery stats (Settings -> About phone -> Battery use), Android System was listed to consume 23% of the battery .
Apparently the problem is a bug in Gingerbread version 2.3.3 (you know there is 2.4 as well) on how the system handles the Wifi adapter. If you go into your Settings -> Wireless & Networks -> Wi-Fi settings, press the menu button and click on "Advanced", you'll see a menu entry "Wi-Fi sleep policy". Gingerbread seems to have a problem when that option is set to "When screen turns off". While that may sound to be the most energy-saving option, the bug turns it into a battery killer. If you switch the option to "Never", the Android system will only consume ~3% in the battery stats.
Obviously, in addition to this, the best battery saver is to just turn Wi-Fi off when you don't need it . Caution, if one of the future updates fixes this problem (which I strongly hope), you have to set the option back again.
Click to expand...
Click to collapse
Something I didn't see but killed my battery on my windows mobile phone was instant messengers. Do you use any apps that are for instant messaging.
Found this thread also talking about the same bug with wifi
http://code.google.com/p/android/issues/detail?id=15057
So it seems that if you (cmdr001) also are a full time wifi user, you may be affected by the same bug. Check your wifi sleep policy and adjust your settings to "Never".
Install a battery monitor app from the market or spare parts to see what is using your battery. Install Juice Defender to stop all that excessive useage.
Excellent find!!!!!
Just switched the sleep policy to "never" (which ironically I've always used until very recently). Ill return with results after about 5 hours. The only thing is that I'm on android 2.3.5 not 3.3 so we will have to see if the bug was affecting me.
I also don't have Google goggles. And to the above poster, my phone regularly went into deep sleep so it wasn't my CPU that was staying active.
Oh and I've been using watch dog to look for rogue programs for the last 24 hours. I haven't got a single alert.
Sent from my Microwave
I guess the first question should have been what ROM were you using and to try a different one then. Needless to say it still has 2.3.3 components in it. And if you recently changed that setting then my bet is thats the issue. Goodluck.
Watchdog may alert you if you are using too much cpu at one time but I don't think it will let you know what is constantly using the cpu.
Ok there's a glitch somewhere in the battery tracking. I just checked it and android system was consuming 12% battery. I placed one 17 minute phone call and re checked it, I then had 57% android system consumption.
No way.
I'm using a cm7 nightly and I'm about to flash the stable version with a different kernel. Ill do a full wipe as well.
Sent from my Microwave
You could check your wakelocks.
After recharging my battery to 100% and wiping the battery stats, my android system consistently uses 2% of the battery, while the display sucks up around ~40%.

Why do Android System, Android OS, & Bluetooth account for majority of battery drain?

Why do Android System, Android OS, & Bluetooth account for majority of battery drain?
On my old Galaxy S4, I found that the screen was almost always the highest battery drain -- and if I saw some app using close to or more than the screen, then I knew something was wrong. However, with my Galaxy S5 (running OptimalROM 13.1), I am consistently seeing Android System is the highest drain, followed by Android OS -- at times I'm getting only 10 to 12 hours of life, but other times I get over a day -- in both cases, it's the Android System and Android OS using the bulk of the power, never an app.
I also see some odd things like Bluetooth using nearly 10%, even though it isn't connected to any devices the entire day -- why would it use that much on standby?
I also see Google Services sometimes using over 10% -- I think that was while I had Google Maps in the background (not navigating).
Nerva said:
On my old Galaxy S4, I found that the screen was almost always the highest battery drain -- and if I saw some app using close to or more than the screen, then I knew something was wrong. However, with my Galaxy S5 (running OptimalROM 13.1), I am consistently seeing Android System is the highest drain, followed by Android OS -- at times I'm getting only 10 to 12 hours of life, but other times I get over a day -- in both cases, it's the Android System and Android OS using the bulk of the power, never an app.
I also see some odd things like Bluetooth using nearly 10%, even though it isn't connected to any devices the entire day -- why would it use that much on standby?
I also see Google Services sometimes using over 10% -- I think that was while I had Google Maps in the background (not navigating).
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Click to collapse
I believe that is the new normal. Unfortunately, "Andoid System" in our battery stats is nonspecific: that heading actually covers dozens of little apps and functions. With each successive generation, the phones try to have more features.
You can get a little better idea with GSam Battery Monitor: by clicking on the "Android System", it brings up another window showing you all of these processes. That doesn't mean you'll be able to do much about it, though.
I was able to solve one major problem with ridiculous battery drain by looking more closely: I have a lot of mp3s and pictures on my sdcard. Android system was scanning them, but Samsung indexing service was also scanning them for no useful purpose, and every time I rebooted it would start chewing on them again. I froze the samsung indexing service and the battery life improved by many hours per day.
Where do I disable the Samsung Indexing Service? I doubt it's causing problems, but it's useless to me.
Nerva said:
Where do I disable the Samsung Indexing Service? I doubt it's causing problems, but it's useless to me.
Click to expand...
Click to collapse
The safest way is to use Titanium Backup to "freeze" IndexService and, optionally, "S Finder". If you run into any issues, you can re-enable them easily by "defrosting" them.
Disabling them doesn't affect me at all because I use a file explorer to browse to my files directly.
OK, I installed GSam Battery Monitor a few weeks ago. Today I am dumbfounded by what my phone is doing -- after undocking it for just two hours and not using it at all, I notice it is hot in my pocket, so I pull it out and see the battery has already dropped to 78%. I check the list of open apps, and there's not much there -- my phone dialer, Camera, Chrome (with no pages open), and Messaging -- that's it.
I check the GSam battery usage, and it says the screen is using 2%, the cell radio 2%, the WiFi 1%, and the rest is "App Usage" -- I click on apps, and Kernel (Android OS) is using ~60%, Bluetooth is using 22%, and Android System is using ~10% -- so they combine for 90% of "App Usage". My Bluetooth is "on" but not connected to anything -- indeed, it is paired with only one device, which I have not even turned on in months -- the phone is getting all of its data via WiFi, which is only using 1%, yet the Bluetooth with nothing to do is using 22%!
What the hell is going on?
Nerva said:
OK, I installed GSam Battery Monitor a few weeks ago. Today I am dumbfounded by what my phone is doing -- after undocking it for just two hours and not using it at all, I notice it is hot in my pocket, so I pull it out and see the battery has already dropped to 78%. I check the list of open apps, and there's not much there -- my phone dialer, Camera, Chrome (with no pages open), and Messaging -- that's it.
I check the GSam battery usage, and it says the screen is using 2%, the cell radio 2%, the WiFi 1%, and the rest is "App Usage" -- I click on apps, and Kernel (Android OS) is using ~60%, Bluetooth is using 22%, and Android System is using ~10% -- so they combine for 90% of "App Usage". My Bluetooth is "on" but not connected to anything -- indeed, it is paired with only one device, which I have not even turned on in months -- the phone is getting all of its data via WiFi, which is only using 1%, yet the Bluetooth with nothing to do is using 22%!
What the hell is going on?
Click to expand...
Click to collapse
I know that sometimes it gets hung up if it encounters a corrupted media file while scanning for them, and that produces the symptoms you're describing. Scan your SDcard (it's fastest to do it on a computer, but there are many ways to accomplish this) for any files that are of size "0 kb" (that is, zero kb) and delete them. See if that resolves your issue.
Also try clearing cache and dalvik cache, just because that can alleviate strange problems for no discernable reason.

Need help on battery life and CPU usage

I have a Samsung Galaxy S7 and the battery was doing fine. A few weeks ago the phone started getting quite slow and the battery life went way down. I had installed a few apps around then, so I removed them and still battery life was bad. I tried restarting the phone and that didn't help. At the time I was running Marshmellow and I was using OSMonitor to watch the system. I was finding that Android OS was taking most of my battery and 30% of the CPU all of the time. Not long after that Nougat became available and I upgraded thinking that might help. It didn't help and OSMonitor no longer worked. I switched to GSam Battery Monitor and used adb to give it the permissions to see all app information. I'm still finding that the Kernel is taking 28% of my battery and Android System is taking 37% of my battery and I can't figure out why. I would rather not need to do a full reset and install all of my apps and settings again, so I'm asking if anyone out there has ideas on things to try and fix this. This is a non-rooted phone running the stock image from Samsung/Verizon.
Thanks for any help.
try activate the Battery Saving option and use it for a day and see if helps
I've had this happen to me before. The phone was getting seriously hot while it was happening too. I decided to do all I can without doing a factory reset (I was on vacation at the time, so no access to something to backup my data).
I cleared the cache of all apps. Then I disabled all of the stock apps I didn't need (like Gear VR). I also shuttered apps running in the background to about a max of 3 apps open at any given time. That stopped the insane heat issue, but Android System was still sucking 30% of the battery. I turned off Always On Display, that got me down to about 25%. A factory reset got the phone down to around 10%, and I never saw the issue again.
Before you do that I would recommend checking out this thread below as there does appear to be a bunch of other possible solutions provided by others.
https://forum.xda-developers.com/s7-edge/help/how-experiencing-android-battery-drain-t3327730/page51
Djuganight said:
try activate the Battery Saving option and use it for a day and see if helps
Click to expand...
Click to collapse
But then my background syncing is turned off too...
I didn't need this before, so wondering why I should need it now.
I had same issues and was able to fix it. See the following thread for details.
https://forum.xda-developers.com/showthread.php?p=71558514
Try this , it helped me a lot .
Download from the XDA forums the Kernel named : "Apollo Kernel" v7
Just flash it , and when you install it , if you dont use your phone for high end games or hard work,that requires high end specs , then you can underclock the cpu/gpu .
It s a battery life saver, plus , your components will be much better in terms of thermals/life

Update and its problems..

In fact, after the last update, the performance became faster and smoother. The programs quickly opened up. That's good.
but unfortunately the battery is draining more quickly.
And heat during charging has returned ?⁦⁩
I am on Security patch - 1 November 2018 as well.
And as soon as the phone restarted after the backup, the memory card showed up "corrupted" / Format to fix or use the card - error.
Thankfully, google photos backup saved the data..
But, this is bad.
Edit- Yes, Charging is really rapid.. and heats up the phone significantly more than before..
I have been in contact with Nokia's support department and said that the battery's rapid discharge is due to the adaptive battery. This will take a week or two to learn and then the battery will return as it was before
Emad tober said:
I have been in contact with Nokia's support department and said that the battery's rapid discharge is due to the adaptive battery. This will take a week or two to learn and then the battery will return as it was before
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Click to collapse
I did a factory reset and the draining is gone immediately, so I don't think they're right
Rubens95 said:
I did a factory reset and the draining is gone immediately, so I don't think they're right
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Click to collapse
And I also think that because I am not convinced.
Factory reset seems to be the best thing we do after every update.
Emad tober said:
And I also think that because I am not convinced.
Factory reset seems to be the best thing we do after every update.
Click to expand...
Click to collapse
Why don't try this?
https://forum.xda-developers.com/nokia-7-plus/how-to/how-to-fix-android-pie-problems-t3874455
NahuelMS said:
Why don't try this?
https://forum.xda-developers.com/nokia-7-plus/how-to/how-to-fix-android-pie-problems-t3874455
Click to expand...
Click to collapse
Thanks. Support team Provide the following advice: while the screen is on. Press the Volume Up button + Power button for at least 10 seconds until I feel a vibration.
(The charger is unplugged). This is called a soft restart. I think the problem has been solved
Emad tober said:
In fact, after the last update, the performance became faster and smoother. The programs quickly opened up. That's good.
but unfortunately the battery is draining more quickly.
And heat during charging has returned ⁦⁩
Click to expand...
Click to collapse
Remove unwanted apps and wanted apps, have only system apps and 2 or 3 installed apps. Phone won't heat. And this is how I keep my phone cool. Bad apps makes heating issue, for instance if I install klwp app and give access to contact and phone calls log. Phone will get warm. Or remove unwanted permissions for all the installed apps and see if it helps.
saltgirl said:
Remove unwanted apps and wanted apps, have only system apps and 2 or 3 installed apps. Phone won't heat. And this is how I keep my phone cool. Bad apps makes heating issue, for instance if I install klwp app and give access to contact and phone calls log. Phone will get warm. Or remove unwanted permissions for all the installed apps and see if it helps.
Click to expand...
Click to collapse
i suggest also get in settings/battery/adaptive, keep auto switch, but ALSO manually restrict ALL apps you don't need work in background...
I think the adaptive battery affects performance and does not help improve the battery. So i've disabled it and put all the programs in the list of blocked apps.that will help to save the battery.
Now i have the best performance...
Has anyone observed apps refreshing very often when multi-tasking. This issue is happening post-November update.
I love this phone. But now I'm having trouble freezing the screen. very annoying

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