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).
Click to expand...
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.
Related
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%.
Hi,
The battery life of my Nexus 5 has taken a dramatic hit since the 4.4.2 update. I think the culprit is Android System but the GSAM battery graph seems to suggest that the culprit is Android OS kernel. My Nexus 5 is on 4.4.2, unrooted, stock ROM and the build no. is KOT49H.
In short, my phone does not seem to have a wakelock issue but I can't verify because 4.4 does not allow wakelock access without root. It sleeps fine at night and in daytime when it is not in use. I only lose around 5% or less overnight with 2x battery turning off the data connection and only turning on data connection once every night. The problem is the Android System which drains at least 17% (sometimes 25%) of battery everyday and routinely sits on top my of battery usage chart with or without me actually using the phone. My usage per charge is typically around 6-7 hours with around 1 hour 45 minutes screen on time. I had extraordinary battery life before the update to 4.4.2 (lasting more than 1 day with over 3 or 4 hours screen on time). Now my battery life is completely shot. The battery graphs attached already represent one of the better days. Some days the Android system will drain at 25% or more. You will note my phone relatively slept fine without draining at night in the first 7 or 8 hours and then the battery drain started to take a nose dive after I woke up. I feel that whenever I start using the phone (with the screen being turned on), the battery drain will occur. My observations are as follows:
1. I use LTE but the reception at my home and work for LTE is not good so the radio jumps between LTE and H+ from time to time however I do not think the radio jumping contributes that much to the drain. The drain stays the same even when I am at a place with good LTE reception. I use wifi at home but i cannot connect to wifi at work (which sadly is another issue). The wifi is always off unless i use it at home. I do NOT have wifi scanning in the settings. I have wifi battery optimization on. I never use bluetooth.
2. My google now is off. My location setting is completely off with no location reporting etc..
3. My Google + auto back up is off. I do not use Facebook, Facebook messenger, Instagram, snapchat etc. I mostly use Feedly, Whatsapp, Gmails and look at stock quotes every day. I seldom take pictures, videos or listen to music.
4. I only have one widget dashclock widget. I have removed feedly and stock quote widgets from the home screen but they don't seem to affect my battery usage that much.
5. I use Automateit but only have a few rules such as setting vibrate on weekdays etc.. I do not have any profiles which are related to GPS or location which i understand would drain battery. I also use Dynamic Notification, Light Flow, Lux, Nova Launcher, Notification Toggle and the memory in general is always below 65% in the background. I also use 2x battery to save battery which is set at switching off data after I turn off the screen and it will only turn data in the background every 10 minutes.
6. I have tried safe mode and 9 out of 10 times the Android system drain remains the same. The only way to lower the Android system drain (albeit temporary) is when I turn off the phone and plug it in for a charge, then turn it on when it is full and still plugged in. After I unplug it, the Android System drain will lower to say 7 or 8 % but it will slowly creep back up to 20% within an hour or so.
7. The CPU usage overlay routinely has 9 + readings on the top when the screen is turned on (but with no app running). I think it means very high CPU usage.
8. I do not think Feedly is causing any problems. I deleted the app and the drain remains. I also do not think GSAM is that useful as pointed out by another member here. It points to one app. You delete that app and then the drain remains it will point to something else.
9. I have been using Greenify (non-root) but it does not seem to help with my battery drain as the drain might be caused by system apps or processes within the OS.
I don't know what else to do and this problem has been troubling me for more than 1 month now. Please help !
Update on 24/2/2014:
I have given up and factory reset my phone. After I reset my phone, the apps were installed via Google Play automatically. I also switched to ART. It was fine initially for at least one day. The apps were there but I did not use or enable most of them as I wanted to transfer all my data and tweaked the settings in one goal. I mostly just used Feedly, Whatsapp and Maps for navigation. Even with Maps and high accuracy GPS on, the Android System would go below 10% even though it would temporarily increase to say above 20% during navigation. This morning, I thought the battery seemed ok so I enabled Lux, Dynamic Notifications, Lightflow, Automateit, Nova Launcher and restore the settings to most of the apps.
The Android System drain came back within 2 hours and hit 25% of the total battery drain. My phone's battery dropped from 100% to 40 % in less than 5 hours and the screen on time was only around 1 hour! I never did any battery intensive actions. The most was turning on the phone to check my battery and whatsapped less than 10 messages back and forth ! Since the drain re-appeared, I have turned off completely the location setting, Google Now, sync for Google Plus, auto-backup for Google Plus. I have removed all widgets and disabled Dynamic Notifications, Nova Launcher, Light Flow, Lux. The drain still remains the same at 23% or more.
This is driving me absolutely crazy and I am sick and tired of spending so much time and energy on sorting out the cause for drain (and to no avail!) I spent a lot more time on trying to fix the phone than really utilizing the phone for my benefit !! I just sent an email to the Google tech support and hope they will help instead of sending me generic self-help sheet. Thanks all for listening and trying to help. I am just really disappointed with Google this time.
Use bbs to get wakelock info.
Feedly has got to go too
Sent from my Nexus 5 using Tapatalk
rootSU said:
Use bbs to get wakelock info.
Feedly has got to go too
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Thanks for your reply. My N5 is not rooted so I do not have access to wakelock stats anymore.
I have removed Feedly but the android system drain persists.
Not a lot that can be done without knowing the cause. Consider factory reset?
Sent from my Nexus 5 using Tapatalk
rootSU said:
Not a lot that can be done without knowing the cause. Consider factory reset?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I am hoping I don have to resort to factory reset and can wait for the 4.4.3 update but I guess my patience is running out.
Thanks for your help.
My missus' LG-P880 has exactly the same problem. Just started happening one day. It seems to be wakelock locator alarms according to bbs but there doesn't appear to be any reason for it. Its been driving me mad too. Luckily tho she's rooted so using app opps i disabled Google services location and it's kinda helped
Sent from my Nexus 5 using Tapatalk
Did you try another kernel ? When I changed to franco kernel, my battery life is better.
having weak LTE signal kills the battery but it should not be this bad.
Maybe you should try a factory reset and see if the problem still persist, if not then you have an rogue app somewhere.
You can use the process of elimination.
Start with disabling Dynamic notifications and Light flow as those have high potential for battery drain.
Sent from my Nexus 5 using Tapatalk
Elias_grodin said:
I am hoping I don have to resort to factory reset and can wait for the 4.4.3 update but I guess my patience is running out.
Thanks for your help.
Click to expand...
Click to collapse
Restart your phone in safe mode, and see the battery drainage...maybe it can help you.
It seems good for me
Sent from my Nexus 5 using Tapatalk
I had this same problem the other night. Get app ops starter from the play store. In there turn location off in Google play services and android system. Note, this may impact other apps. I don't use any that I need location for so it works for me.
Sent from my Nexus 5
I had a similar issue as well. For me I turned off a couple things and it really helped:
1. Turned off Cerberus, I believe checking location too often or incorrectly or something.
2. Turned off Account sync for Play Newstand. Noticed when a sync would occur, it would hang on Newstand for much too long which I think was waking device and keeping device awake during it's long syncs. Everything else would only take a min or two total.
3. Set G+ photo sync to only sync when on wifi and charging.
4. Removed Yahoo Weather app. Noticed yahoo weather app staying alive a lot too.
5. Removed Whatsapp. Probably unnecessary really, but any of those messaging/weather/location apps that I don't use often (if ever) I removed to make sure they weren't checking location in the background.
So far, I'm at 78% battery today when I would have been at around 30-40% usually, so that combo has made a huge difference.
It's going to be different for everyone I think, but basically just make sure you don't have any excess apps checking location in the background. And at least for me there seems to be something wrong with Play Newsstand sync hanging for long periods of time.
Yea... Even i had the same issues... Latest version killes ma deep sleep mode nd also some of a rules disappeared....
I was having similar issues and was able to narrow it down to syncing Google Services...
I found that often times Google Drive would get hung up when syncing in the background and chew up my battery.
What Google Services do you have set to auto-sync? I would narrow it down to the ones you only really need to have synced in the background and have the others sync up for you when you open them.
Also, in regards to your LTE/H+ signal, have you tried to flash another radio to see if there is any improvement? A poor signal can have a pretty significant impact on battery life as well.
Lastly, as mentioned by another user, Better Battery Stats, though requiring root, will make it a lot easier to track down the culprit of the issue if it indeed a rogue app somewhere.
Try different keyboard. I've a suspicion that latest Google Keyboard is the culprit.
I was having some unexplainable with BBS (no locks, etc.) battery drain. Which can only be resolved (though temporarily) with reboot.
So, I installed alternative keyboard (Swype in my case) and using it. So far, second day I don't have battery drain.
Update
Please refer to the OP for update. Thanks all.
battery after reset
After a second factory reset, I did not install a lot of the apps which I suspect have something to do with my drain - including Swype, Dynamic Notifications, Nova Launcher, LightFlow, Task Manager, 2x battery, Lux, Notification Toggle, Dash Clock, Automateit. I have also set my location to device only with no location history and history. I have also disabled Google Now. I have not restored my photos, music and videos to the phone yet. I have disabled sync for Google Plus, Google Drive etc.. I have also disabled auto back up for Google Plus. I am on ART.
The battery life (with around 25 % left) was around 6 hours 30 minutes or a bit more but with close to 2 hours 40 minutes screen on time. The screen was the biggest draw. Android system comes in second with around 13%. This is obviously better than before where I managed to squeeze maybe a hour or 30 minutes more but with 2x battery turned on in the background. I mostly used the phone for battery checking, whatsapp, Feedly, web surfing. I played games for around 20 minutes. I was not on wifi most of the time. Is this battery performance normal?
Thanks in advance.
Replacement offer by Google
Elias_grodin said:
After a second factory reset, I did not install a lot of the apps which I suspect have something to do with my drain - including Swype, Dynamic Notifications, Nova Launcher, LightFlow, Task Manager, 2x battery, Lux, Notification Toggle, Dash Clock, Automateit. I have also set my location to device only with no location history and history. I have also disabled Google Now. I have not restored my photos, music and videos to the phone yet. I have disabled sync for Google Plus, Google Drive etc.. I have also disabled auto back up for Google Plus. I am on ART.
The battery life (with around 25 % left) was around 6 hours 30 minutes or a bit more but with close to 2 hours 40 minutes screen on time. The screen was the biggest draw. Android system comes in second with around 13%. This is obviously better than before where I managed to squeeze maybe a hour or 30 minutes more but with 2x battery turned on in the background. I mostly used the phone for battery checking, whatsapp, Feedly, web surfing. I played games for around 20 minutes. I was not on wifi most of the time. Is this battery performance normal?
Thanks in advance.
Click to expand...
Click to collapse
I have reset the phone three times. After the third attempt, the battery drain for Android System would go back up to 20% plus. By the test of elimination, I thought I narrowed down the possible culprit to Light Flow and Dynamic Notifications. I uninstalled both of them but the battery drain remained 20% plus.
Google was willing to replace my device. I asked them whether the battery drain is likely a hardware or a software issue or a combination of both. They said (to my surprise) it is hardware issue. It seems they have come across quite a number of similar cases. I always thought it was a bug within 4.4.2 or in the google apps such as Google Play Services etc. and could be fixed by a patch or something. The phone also means a lot to me as it was a gift from my gf. I just don't want to go through the hassle of replacing the device if it is a software problem but I guess I am running out of choices unless I decide to wait for the update. What do you guys think?
It's definitely not a hardware issue. If you Google it there's threads all over the place with all different makes and models of phones having the same problem and no one can figure out why, apart from it definitely seems something to do with Google services (GmsCore.apk)
Your best option is to root your phone and use app ops and turn location access off for every app that doesn't need it. (pretty much everything apart from maps and weather apps)
Sent from my Nexus 5 using Tapatalk
"Android System" keeping phone awake 24/7, draining battery life- T-Mobile Z3
I startes noticing that even after quite a few charge cycles, I'm still getting 4-5 hours of SoT over less than 24 hours. The phone is awake 24/7, and Android System seems to be the cause, but no idea why. Does anybody have any suggestions? I've attached some screenshots.
Factory reset?
Sent from my Z3
Maybe you have some apps causing wakelocks, showing through Android system? My dad had massive data usage from Youtube which confused me until I uninstalled an app that used YouTube.
Yes something that you have installed is causing the Android System to run for extended periods.
I would first try, disabling some apps in the settings menu, to see if that helps. (like throw, bluetooth, NFC, wifi, hotspot) see if any of those help
I would factory reset, and be very careful about what you install back onto the phone initially.
Or instead of reset try, clearing out all apps and re-install one by one untill you hit a bad one. If that does not work I guess reset.
festizzio said:
I startes noticing that even after quite a few charge cycles, I'm still getting 4-5 hours of SoT over less than 24 hours. The phone is awake 24/7, and Android System seems to be the cause, but no idea why. Does anybody have any suggestions? I've attached some screenshots.
Click to expand...
Click to collapse
In Settings>Power Management, there is a selection called "App power consumption". Have you checked there? There could be an app listed that drains the battery.
I had checked app power consumption, and unfortunately it didn't give me any further information. Better Battery Stats is also almost completely useless without root, but I did try it and saw Performance Manager or something to that effect was what was keeping it awake (in Kernel Wakelocks). I ended up doing a factory reset, and it seems like it's working fine now with the same combination of apps.
I think I disabled something I shouldn't have using pm block (package), since after some searching it seems like the phone might have been constantly searching for a blocked package, keeping it awake. It's working fine now, thanks everyone for your suggestions!
I'm not sure if it's more appropriate to post here
or on the custom ROM forum itself, but here's my battery issue:
Issue: Abnormally fast battery drain. My battery would
be fully charged, and almost immediately start draining until
it'd show 1% within 2 hrs. Screen would be off mostly (normal
use).
Been on a custom ROM since January 2017 (crDroid) and have had no problems with it since,
except 3 days ago, when the problem first appeared.
Things that are ON: LTE data (or Wi-fi), Auto apps update on
Google Play Store (never been problematic before), Location,
Things that are OFF: Bluetooth, ScreenCast, Caffeine
When I check Battery in Settings, the numbers don't add up.
I'd have battery indicator at 70% for example, but Screen,
Android System, all other apps would add up to only 7%. So
that's a whopping 23% unaccounted for.
But here's the weird thing: it drains fast until 1%, then at 1%,
the phone is supposed to initiate automatic shutdown like it has before.
When this issue cropped up, the phone keeps going for about 6 hours
or so before shutdown is started. Checking Kernel Adiutor occasionally,
I'd see a much slower decrease in voltage which probably reflects
more accurately the power drawdown situation.
Things I've done:
-clear cache (both through File Explorer and TWRP Recovery)
-clear batterystats.bin
-calibrate battery after full charge/discharge (via Root Essentials,
which basically does the same thing as manually deleting batterystat.bin,
if I'm not mistaken)
-Resetting App Preferences via Setting/Battery
None of the above has worked. Any idea what might be wrong?
My device is a Zuk Z1, with a 4100mAh battery. It usually lasts me more
than a day on normal use, but as the attached pic shows, it's at 96%
yet without having used any apps yet, has only 2 hrs of juice left.
I've tried reflashing my ROM, wiping everything including formatting data
yet nothing has worked.
I'm a light user, as I don't play games or watch videos on my phone.
Neither do I use graphics-intensive apps. I haven't used processor-intensive apps
that require constant GPS (like Google Maps, Waze) since then.
Borat38 said:
I'm not sure if it's more appropriate to post here
or on the custom ROM forum itself, but here's my battery issue:
Issue: Abnormally fast battery drain. My battery would
be fully charged, and almost immediately start draining until
it'd show 1% within 2 hrs. Screen would be off mostly (normal
use).
Been on a custom ROM since January 2017 (crDroid) and have had no problems with it since,
except 3 days ago, when the problem first appeared.
Things that are ON: LTE data (or Wi-fi), Auto apps update on
Google Play Store (never been problematic before), Location,
Things that are OFF: Bluetooth, ScreenCast, Caffeine
When I check Battery in Settings, the numbers don't add up.
I'd have battery indicator at 70% for example, but Screen,
Android System, all other apps would add up to only 7%. So
that's a whopping 23% unaccounted for.
But here's the weird thing: it drains fast until 1%, then at 1%,
the phone is supposed to initiate automatic shutdown like it has before.
When this issue cropped up, the phone keeps going for about 6 hours
or so before shutdown is started. Checking Kernel Adiutor occasionally,
I'd see a much slower decrease in voltage which probably reflects
more accurately the power drawdown situation.
Things I've done:
-clear cache (both through File Explorer and TWRP Recovery)
-clear batterystats.bin
-calibrate battery after full charge/discharge (via Root Essentials,
which basically does the same thing as manually deleting batterystat.bin,
if I'm not mistaken)
-Resetting App Preferences via Setting/Battery
None of the above has worked. Any idea what might be wrong?
My device is a Zuk Z1, with a 4100mAh battery. It usually lasts me more
than a day on normal use, but as the attached pic shows, it's at 96%
yet without having used any apps yet, has only 2 hrs of juice left.
I've tried reflashing my ROM, wiping everything including formatting data
yet nothing has worked.
I'm a light user, as I don't play games or watch videos on my phone.
Neither do I use graphics-intensive apps. I haven't used processor-intensive apps
that require constant GPS (like Google Maps, Waze) since then.
Click to expand...
Click to collapse
Have you tried flashing another ROM/going back to stock?
Freewander10 said:
Have you tried flashing another ROM/going back to stock?
Click to expand...
Click to collapse
Not yet. Am going to try an AOSP-based ROM later.
I've been deleting apps piecemeal, but have faile to pinpoint the culprit.
I have almost come to the conclusion that it's the ROM that's problematic.
But if that were the case, why haven't I had the same problem since
when I first flashed this custom ROM months ago;
and why is the problem reappearing when that same ROM is re-flashed now?
OK, I've flashed 3 other ROMs: Citrus-CAF, NucleaROM and stock, and the problem persists.
By doing the above, I've crossed out the possibility of it being the ROM. Neither is it the battery
itself, because it would've shut down by itself at 1%, yet at 1% I can last 6 or 7 hours of light use.
Anyone out there have any idea?
If you get the same results, the battery is trashed. Is it aftermarket?
WestCoastSunset said:
If you get the same results, the battery is trashed. Is it aftermarket?
Click to expand...
Click to collapse
The battery? No, it's the factory original.
It would not be unusual for a battery to fail in a month or two. I've had that happen to a couple laptops where I work.
WestCoastSunset said:
It would not be unusual for a battery to fail in a month or two. I've had that happen to a couple laptops where I work.
Click to expand...
Click to collapse
That would be pretty unusual for reputable companies. If ever it did happen in my case, perhaps it's a lemon batch.
Sadly, I bought this without warranty.
Not really, happens all the time in laptop world. Even with oem batteries.
Hi everyone,
I know battery issues have been discussed a lot, but I see others with on screen times that are far above what I am able to achieve. When I first started using the S7, the battery life was fantastic but I feel that every update has gradually worsened the battery life.
Are there any suggestions to see what is using so much battery? I've attached screenshots that show 23% remaining after less than 2 hours screen on time. I've tried a few battery monitoring apps but they do not provide much more info on "Android System" and "Android OS"...
Thank you!
Wanted to post a new screenshot... battery at 23% at just under 1.5 hours of screen on time (with auto brightness)...
Could try something like GSam battery monitor if you haven't already, seems to be a popular one
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm
Have you cleared the cache from recovery yet?
Obviously last resort would be a factory reset
And if you have upgraded from MM to Nougat and have not factory reset since, that's likely the cause, always advised to reset after a major OS upgrade to prevent things like this happening
*Detection* said:
Could try something like GSam battery monitor if you haven't already, seems to be a popular one
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm
Have you cleared the cache from recovery yet?
Obviously last resort would be a factory reset
And if you have upgraded from MM to Nougat and have not factory reset since, that's likely the cause, always advised to reset after a major OS upgrade to prevent things like this happening
Click to expand...
Click to collapse
Thanks, I will try that battery monitor but I think it will continue to just list "Android System" and "Android OS" rather than the detailed process that is draining so much battery...
I've tried a factory reset after upgrading to Nougat - no difference.
Android System shows only 11% usage on your screens with only 335mAh which is also 11%, so that's not the issue
Screen and Android OS are both using less than 10% each, so at most between those three that's under 30% total battery usage
Nightwind Hawk said:
Thanks, I will try that battery monitor but I think it will continue to just list "Android System" and "Android OS" rather than the detailed process that is draining so much battery...
I've tried a factory reset after upgrading to Nougat - no difference.
Click to expand...
Click to collapse
Good day.
In GSAM you have an option (Enable more stats) in 'more' menu, that gives you the apps that are battery consuming. Try that.
Hi.
I've got a similar experiance on a new S7 bought last week.
It came with Android 7.0 intalled right out of the box, so this should have been a clean install.
My top battery drains are:
Screen: 20% (5h screen on time)
Android OS: 12%
Device standby: 11%
google play services: 10%
android system: 8%
mobile standby: 8%
camera: 7%
I deinstalled several apps, and disabled a lot of automatic syncing and other things like google cast or nearby. The "ususal things" for a better battery life...
I've used a lot of camera, messaging, internet browsing, but none of these apps are on top... it's the "Android OS"...
This is strange, because I never saw this kind of beahaviour on other smartphones.
There's one Samsung app I cannot deactivate: Knox. And it's showing the same percentage of 8% like "Android System" (perhaps because it's a subset of the "system")
I don't want to use Knox, like many other private customers would.
Is there a chance to stop it?
I'm having the same problem. Today was my new low record, 10% battery left with 1h45m SOT.
Wlan has been off, BT off, 4G data on, most used app was Spotify which I used with headphones for about two hours. Before Nougat update I could get 4-5 hrs SOT.
I don't use Facebook or FB Messenger apps, and have actually disabled FB and a lot of other junk with Package Disabler Pro. Using PDP doesn't really have much effect on my battery life.
Is it safe to clear the cache if I'm not planning to do (yet another) factory reset?
CptnKork said:
There's one Samsung app I cannot deactivate: Knox. And it's showing the same percentage of 8% like "Android System" (perhaps because it's a subset of the "system")
I don't want to use Knox, like many other private customers would.
Is there a chance to stop it?
Click to expand...
Click to collapse
System apps aren't measured individually for performance reasons, so you're right, it's a subset of "System" and not necessarily using that amount of battery. Knox is a security feature. You cannot disable it without modifying the firmware and voiding the warranty. It genuinely doesn't do much if you don't use it though (but might get annoying if you're rooted).