06-22-2018 03:46 PM
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  1. chanchan05's Avatar
    then you have to live with this drain. I don't have the battery drain anymore after disabling it and now my battery is normal, when I don't touch the phone, it doesn't suck up battery like no tomorrow as it did before
    No he doesn't. He just has to turn off all the other features of Google Now (which are the ones you mentioned) and just leave search as the one active. It's in the settings of Google app.
    11-21-2016 06:31 PM
  2. SkalaaLapsa's Avatar
    I was having the same problem. I am no pro on this but I have put together several steps I found on various discussions. So far it has worked for me and my battery life has increased by at least 30%.
    So here it goes:
    1) Charge Your device and try to leave it alone after charging for at least an hour or so to see what is using Your battery while Your phone is on standby.
    2) Go to battery settings and check which are the programs draining Your battery the most.
    3) For me specifically the main problem was the android system altogether. As You can't turn it off for obvious reasons, the next step is to go to program settings and see the list with all of the programs.
    4) Scroll through all programs to check for programs You don't need and uninstall them. Next check for those You don't seem to know (there will be various android - based programs) - most of them You need but some of them are rudimental. Click on them to see whether they have used any battery life since the last charging. If they haven't, leave them alone. If they have, google them to see what they are and do You need them. For me there where several programs I found I can disable (Or turn of, but most of them are built in so can't be uninstalled): S Voice, Gear VR Service, KNOX, OM Customize (not really sure about this one but nothing bad happened by turning it off). Of course that You can do if You don't use them.
    5) Another major battery consumer was facebook. As I want my notifications and everything else, I didn't turn off background data but that can be done also. Also check for things You don't use, for me it was facebooks' "Nearby friends". Turned that one off. I guess there could be more.
    6) I also changed google voice settings to recognize voice only when google page is open.

    Of course You need to start off by the other suggestions that are here first, this is the last resort. For example my boyfriend got this same phone but from different dealer and doesn't have any of these problems and it is why I started my endevour on finding answers.
    pjniez likes this.
    11-25-2016 04:45 AM
  3. H2oflyer's Avatar
    I have found that the best app for monitoring your battery is "AccuBattery". It does a great job of listing battery draw per app, but I found the best feature for me was the screen off battery draw. I normally run around 1% / hour.
    11-28-2016 02:31 PM
  4. lunta's Avatar
    I am experiencing the same problem of a huge battery drain when the S7 is idle for example in overnight when the device is not used. I have uninstalled or disable almost all apps, but I doubt it is the apps' fault, battery manager shows that it is purely the "Android System" that drains the battery.

    Here is the latest result. In the last evening I fully charged the phone, restarted it, closed all the apps from recent list, checked that all updates and backups were done before disconnecting the charger and leaving the device untouched during the night.

    In the morning I discovered that the battery status was dropped down to 70%. That is a degrease of 30% in ~7 hours without doing anything with the phone. Now around noon there is less than 50% of battery remaining. Crap!

    Android System using 30% battery-screenshot_20170122-105522.jpgAndroid System using 30% battery-screenshot_20170122-105533.jpg

    My wife also has a Samsung S7, the exactly same model, bought in the same day from the same shop, we are living in same house, have the same operator, connected to the same Wi-Fi access point. Her devices loses about 3-5% of battery overnight.

    When examining the battery usage between our phones it is even more clear that the sole reason is the "Android System". All the other apps and things (e.g. Cell, Idle, Screen, etc.) seem to consume about the same amount of power, except the Android System in my device has many times more CPU time and power usage.

    What could be the reason? Is there any way to more accurately determine what are the processes that contribute in the "Android System" battery consumption reading? The battery usage window also lists lines "Data receiver via Wi-Fi" and "Data sent via Wi-Fi". What might be the units for the numbers? Kilobytes maybe? Anyway, this is also much larger number in my device than in my wife's S7, which indicates my device also transmits data while in sleep. Unfortunately this stupid thing doesn't distinguish different processes, but instead sums up everything as a "Android System" process.

    I will now hard reset this phone and test the battery life with minimal changes to the system.
    01-22-2017 05:54 AM
  5. Wanderist's Avatar
    I have had the same issue lately. My thinking is the gear vr app that is part of the Oscar is running in the background. I've never used a vr device, but I DO use the Samsung Gear app for my gear Smeby watch. There easy an update a few months ago and I noticed my battery life dropped considerably.
    01-22-2017 10:36 PM
  6. lunta's Avatar
    It looks like the factory reset fixed my S7. I have exactly all the same apps installed than before resetting, but now the Android system process drains no battery at all. 12 hours on battery and the phone has lost only 5% of battery:

    EDIT 2.2.2017: Factory reset had nothing to do with it. In this data I had Wifi turned off, hence the small power consumption and disappearance of Android System in power usage listing. In my phone it is the WiFi that is eating the battery.

    Android System using 30% battery-screenshot_20170124-074535.jpgAndroid System using 30% battery-screenshot_20170124-074553.jpg
    01-23-2017 11:59 PM
  7. flumdog's Avatar
    I should have looked at this thread before I posted separately ... same problem here. Factory Reset fixes battery life but only temporarily (couple weeks, usually).
    01-24-2017 10:48 AM
  8. lcs101's Avatar
    Android system has been at the top of my list so often, I just assumed it was normal. The only two things that are ever above it are cell standby (because my service is poor at my house), and recently, weather underground, which for some reason has been at the top recently (which is really odd).
    01-24-2017 07:37 PM
  9. John B11's Avatar
    What happened at the end did you manage to solve the battery drain?

    My s7 drains when sitting idle on the table drains about 5% per hour and about 10 % per hour if browsing and 17 % if on youtube.

    Factory reset (with no new apps installed - except gsam), still shows 5 % drain per hour when phone is just sitting idle. GSAM doesn't show anything strange except the fact the per hour drain when screen is off is still quite high.
    when i first got it (less than a month ago) over night was only about 4-6 percent drainage now it is up to around 30 % per night!

    My wifes s4 mini drains around 1 % per hour when phone is just idle sitting on table while s7 edge drains about 5% per hour and easily outlasts my s7 edge it is a disgrace ! for 700$+ phone

    Has anyone solved this problem successfully ?

    Surely there must be someone who as solved it or got it fixed or returned ?
    The orange gsam photo is for s4 mini the others for s7 edge (pls notice the screen on time in both) Android System using 30% battery-screenshot_20170129-092115.jpgAndroid System using 30% battery-screenshot_20170129-092455.jpgAndroid System using 30% battery-20170129_002639.jpg
    01-30-2017 02:33 PM
  10. lcs101's Avatar
    Still haven't figured out if "android system" continuing to be at the top of my battery drain list despite wiping my cache on multiple occasions means my phone might be defective. Its battery life has been quite poor since day one.
    02-01-2017 12:55 PM
  11. lunta's Avatar
    I have tested this a little bit more. As we all already know the "Android System" is a sum of many different things and processes that consume power, which are, for some reason (maybe a technical reason), not listed individually. I don't know exactly which modules are included, but WiFi is definitely one, and it is a big one that may consume lots of power.

    If your device in unused, like overnight, then Android System power usage is mostly WiFi standby power drain. Well, maybe if there are some updates or synchronizations, then this may also include some of the CPU power required by those processes. Anyway, if WiFi is on, then all the data transfer is done using WiFi, that will increase the WiFi module power consumption. If one's phone has lots of data usage, then obviously Android System is dominating in the list.

    It is, however, a percentual number we are looking at, which must be compared to other processes in the list. If one plays some really CPU+GPU intensive games, they will definitely eat majority of the battery and the percentual value of Android System becomes insignificant.

    I have now had my device for 6 hours with WiFi turned off and the Android System doesn't appear in the battery list at all. With WiFi enabled, Android System would read something >30%. That supposedly is the WiFi idle current.
    I have a fast AC1200 dual-band ASUS AC56U router. Next I will test if connecting only to the 2.4GHz frequency signal is more energy efficient than the full speed AC-speed.

    Android System using 30% battery-screenshot_20170202-170942.jpg



    I also tried the GSAM battery monitor app. What is wrong with it? It shows completely different statistics that the built in battery monitor. See the attached screenshots above and below taken at the same time.


    Android System using 30% battery-screenshot_20170202-171009.jpg


    EDIT 3.2.2017

    As I mentioned before, I tried connecting to slower WiFi. Here is the overnigh result in battery consumption. It indeed seems that the 2.4GHz WiFi consumes much less power than the fast 5GHz/AC connection. Here can be seen that the Android System again doesn't even show up in the list. I wonder why Google Fit has eaten that much power, the phone has been standing still whole night.

    Android System using 30% battery-screenshot_20170203-075101.jpg
    02-02-2017 10:01 AM
  12. flumdog's Avatar
    I found a suggestion on another couple threads, which is to disable Google's Backup My Data under Settings>Backup and Reset. It's been reported as a known bug that interferes with Doze. I've only tried it for one night but the phone started dozing again as soon as I disabled backup.
    02-12-2017 08:20 AM
  13. salvuchi's Avatar
    I read every text in this thread because I have this issue. And I tried every advice: I disabled AOD, I installed the package disabler and disabled all that was eating battery (this app does nothing, I verified this), I tried restricting networks to 2G/3G only, disabled location and enabling only when needed (this is a pain in the ***), I disabled Samsung Pay card access from screen, I tweaked all the advanced features that could impact on battery, I don't have Facebook, I disabled the Google backup, I disabled Google photos from backing up anytime, and the list goes and goes... I think I have tried everything, and the result is meaningless. I can honestly say that the difference between having a dumbphone and a smartphone makes no important difference in battery in my case. With everything enabled, the duration is more or less the same. And it's very bad! I come from an iPhone 6 Plus and I start day at 9 AM, well my old iPhone normally was at 20% battery more or less at 2 AM when I go to sleep. This is impossible with my S7, battery lowers 10% after my first hour of use. Now its 17.22 and battery is at 50% so there is no way I will make it to the end of the day, so I'm charging now. If I didnt charge it, battery would die at 22 or 23. So, with this phone, I have to charge TWICE a day to be able not to worry about battery. To sum up, my battery lasts 14hours average with a max of 3 hours of SOT. This is really different from other people I see here or in YouTube that have 6 hours of SOT and 36hours of use. Of course, I tried factory reset with no results. What is wrong? What else can I do?
    02-15-2017 10:25 AM
  14. lammy8's Avatar
    I read every text in this thread because I have this issue. And I tried every advice: I disabled AOD, I installed the package disabler and disabled all that was eating battery (this app does nothing, I verified this), I tried restricting networks to 2G/3G only, disabled location and enabling only when needed (this is a pain in the ***), I disabled Samsung Pay card access from screen, I tweaked all the advanced features that could impact on battery, I don't have Facebook, I disabled the Google backup, I disabled Google photos from backing up anytime, and the list goes and goes... I think I have tried everything, and the result is meaningless. I can honestly say that the difference between having a dumbphone and a smartphone makes no important difference in battery in my case. With everything enabled, the duration is more or less the same. And it's very bad! I come from an iPhone 6 Plus and I start day at 9 AM, well my old iPhone normally was at 20% battery more or less at 2 AM when I go to sleep. This is impossible with my S7, battery lowers 10% after my first hour of use. Now its 17.22 and battery is at 50% so there is no way I will make it to the end of the day, so I'm charging now. If I didnt charge it, battery would die at 22 or 23. So, with this phone, I have to charge TWICE a day to be able not to worry about battery. To sum up, my battery lasts 14hours average with a max of 3 hours of SOT. This is really different from other people I see here or in YouTube that have 6 hours of SOT and 36hours of use. Of course, I tried factory reset with no results. What is wrong? What else can I do?
    Only thing left to do is flash a different version of the OS
    02-15-2017 07:22 PM
  15. Macklesdaddy's Avatar
    I read every text in this thread because I have this issue. And I tried every advice: I disabled AOD, I installed the package disabler and disabled all that was eating battery (this app does nothing, I verified this), I tried restricting networks to 2G/3G only, disabled location and enabling only when needed (this is a pain in the ***), I disabled Samsung Pay card access from screen, I tweaked all the advanced features that could impact on battery, I don't have Facebook, I disabled the Google backup, I disabled Google photos from backing up anytime, and the list goes and goes... I think I have tried everything, and the result is meaningless. I can honestly say that the difference between having a dumbphone and a smartphone makes no important difference in battery in my case. With everything enabled, the duration is more or less the same. And it's very bad! I come from an iPhone 6 Plus and I start day at 9 AM, well my old iPhone normally was at 20% battery more or less at 2 AM when I go to sleep. This is impossible with my S7, battery lowers 10% after my first hour of use. Now its 17.22 and battery is at 50% so there is no way I will make it to the end of the day, so I'm charging now. If I didnt charge it, battery would die at 22 or 23. So, with this phone, I have to charge TWICE a day to be able not to worry about battery. To sum up, my battery lasts 14hours average with a max of 3 hours of SOT. This is really different from other people I see here or in YouTube that have 6 hours of SOT and 36hours of use. Of course, I tried factory reset with no results. What is wrong? What else can I do?
    same for me,I swear If I don't charge this phone's battery at least 3 times a day,will be getting rid of it soon as I can 2 hours screen time I can barely get
    02-17-2017 06:42 AM
  16. aa6vh's Avatar
    Do you have any software on your phone that receives Push messages? For example, Facebook messenger or the Ring Doorbell app.

    It appears to me that there is a problem in Android that occurs when switching between Wifi and Mobile, having to do with push notifications. When you switch, the apps have to notify the mother ship of their new IP address. That process seems to trigger the Android problem on my phone.

    After disabling the apps that do this type of thing, my phone now lasts the whole day without problems.
    02-17-2017 09:24 AM
  17. lcs101's Avatar
    I found a suggestion on another couple threads, which is to disable Google's Backup My Data under Settings>Backup and Reset. It's been reported as a known bug that interferes with Doze. I've only tried it for one night but the phone started dozing again as soon as I disabled backup.
    Seems ridiculous to have to "cripple" the phone to make it operate correctly in other respects...especially concerning there's been ample time to solve this problem. Haven't tried to do that yet, because I want my stuff to be backed up, but I guess I will. Just lost well of 30% overnight, with 1/3 of that attributed to android system. This has been one of the few frustrations I've had after switching over from my iPhone 6, which I could charge every 3 days even after 2 years.
    02-17-2017 09:46 AM
  18. android_problems's Avatar
    Has anyone found any new solutions yet?

    Since I installed Android Nougat on my S7 the battery life depleted by about 17%. Instead of 4h SOT I get 3 - 3,5h max. I know this is not half as bad as some of you have reported. But it still bugs me. Because I cannot find the reason nor any solution it seems.

    I have used Package Disabler Pro since I bought the phone back in April '16. It used to do a great job in helping with battery life. But now there seems to be a different problem with the OS not necessarily connected to bloatware. It seems that the phone is 'active' all the time although Doze kicks in (see screenshot).

    Android System using 30% battery-screenshot_20170222-115028.jpg

    Can anyone without battery trouble confirm that this is not normal?

    What I tried so far:
    1) Under Applications in the Settings app I reset app permissions
    2) Wiped the system cache
    3) Manually disabled all permissions for each app which it does not need for my usage
    4) Disabled Data saver under Data usage in the Settings app and turned it back on (no measurable effect on battery)
    5) Switched Location to Battery saving in the Settings app under Connections
    6) Diabled most Google related things in the Google App (like Location History, Google Now, Google Voice detection etc.)
    7) Disabled backups for Samsung Cloud and Google Account
    8) Switched screen resolution to FHD. And switched back because there seems to be no impact on battery
    9) Disabled some more processes via Package Disabler Pro (including KnoxAppsUpdateAgent, Hangouts, Game Tools, Game Launcher and many more)
    10) Have Power saving turned on most of the time

    ... and probably some more stuff I do not even remember. I mean it is definitely better than right after the Nougat update - but it does not compare at all to my Marshmallow SOT and battery stats.

    Ideas, anyone? I am really lost here. It seems like the promised battery improvement with Nougat is a hoax, at least for Samsung devices. GSMArena found the same thing in a recent test. I hope they fix this soon, because for me battery life was one of the biggest strengths of the S7..
    02-22-2017 05:20 AM
  19. android_problems's Avatar
    double posting, sorry
    02-22-2017 05:37 AM
  20. dchobo's Avatar
    How about trying the "Greenify" apps to see what apps are running the background? These apps can be draining the battery and also keep the phone from going into doze mode
    02-25-2017 02:06 AM
  21. mistasethg's Avatar
    Think I might have a solution here guys. As we all know, when wi-fi is activated, lots of apps and services are pulling data in the background, especially during sleep/standby. I just discovered a setting that allows you to disable wi-fi in sleep mode, except when charging. I haven't been using it long enough to observe any change yet, but wanted to know if anyone else had already tried this, and whether or not it worked? Didn't see any mention of it in this thread.

    You can find the option in Settings > Connections > Wi-Fi > More > Advanced > Keep Wi-Fi on during sleep > While charging

    I'll report back tomorrow to see if this reduces Android System usage at all.
    02-28-2017 10:17 PM
  22. salvuchi's Avatar
    Sorry I already tried this and the battery gains were meaningless, Android System usage keeps somewhere around 20-40%, in my case at least.
    03-01-2017 03:28 AM
  23. filanto's Avatar
    I turned off cellular sync of photos and also turned off show traffic in my area in Maps. So far with 4 hours since full charge I'm at 83%. I've also used it just as much as normal and I've seen a huge jump in battery life.
    Attached Thumbnails Android System using 30% battery-11796.jpg  
    03-01-2017 10:26 AM
  24. salvuchi's Avatar
    I updated to Nougat with a factory reset and wipe cache in between, and my battery seems fixed now
    03-06-2017 09:15 AM
  25. allensize04's Avatar
    Good to know. I am updating my Verizon phone right now to Nougat
    03-06-2017 11:58 AM
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