My Samsung Galaxy S20 battery lifetime was up to 20 hours per one charge. The I have probably installed some apps, and the time is dropped to less than 15 hours. The phone is clearly warm during the day. It is definitely doing something. How to know what namely?

GSam battery monitor told it can't determine power consumption on per application basis.

Can I see processor usage or something?

I gave permissions to GSam and it showed, that most consumption is from Android system itself. Can some application add module to the system, which consumes power?

  • 1
    What about the built-in battery monitor in Android settings?
    – Robert
    Commented Feb 9, 2021 at 16:56
  • @Robert it is very poor and doesn't answer the question.
    – Dims
    Commented Feb 9, 2021 at 17:22
  • Therefore it is an comment and not an answer. You have enough rep to know how Stackexchange works. But the battery usage monitor included in settings is a system app and therefore has special permissions. No app that you can install have access to that much data like a system app. Therefore my question is more than valid. Ignoring the most valuable source of information is a bad idea. Therefore I was asking.
    – Robert
    Commented Feb 9, 2021 at 19:43
  • Have you looked at similar questions on this site already? From the "related" section: Android smartphone battery suddenly drained twice as fast than usual; from your tags: our battery-life tag wiki links quite a lot matches, like How can I tell what is really draining my battery? // How can I monitor the device battery consumption? // What can I do to increase battery life on my Android device?. Other questions using that tag might hold additional help.
    – Izzy
    Commented Feb 10, 2021 at 0:07
  • PS: I'd also check network stats. Some of your new apps might be busy even when you're not using them. Especially on Play Store, most of the apps are pretty "stuffed" with ad libraries and such (one of the reasons I prefer getting mine from F-Droid).
    – Izzy
    Commented Feb 10, 2021 at 0:10


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