Checking for Android battery drainer

top -b -n 1 -o %CPU,%MEM,CMDLINE -s1 -m 20

That is all there is to do upon having access to adb shell whatever way you prefer. Look for high CPU and MEM use an observe the app ID for the truth.

For some reason the system and the battery monitor in settings won’t bring that to your attention.

Bonus points for you if the cause is some app performing CPU locking and heating up your phone due to being unable to access a tracking domain that wishes to spy upon you.

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