Galaxy tab a8 refresh, part 2

A few weeks after flashing lineageos 21, i started to experience a massive battery drain : the tablet would lose all its battery power while on sitting idle, screen off, wifi off, on battery saving mode.

Therefore i took a look at the battery stats:

adb shell dumpsys batterystats --reset 

then a couple of hours later

adb shell dumpsys batterystats > [path/]batterystats.txt 

also i took a look at the doze log :

adb shell dumpsys deviceidle 

Based on my reading, I disabled the following packages:

adb shell pm disable-user –user 0 com.android.phone

adb shell pm disable-user –user 0 com.android.dialer

adb shell pm disable-user –user 0 com.android.messaging

adb shell pm disable-user –user 0 com.android.cellbroadcastreceiver

And just to be sure these do not interfere with doze mode:

adb shell dumpsys deviceidle sys-whitelist -com.android.messaging

adb shell dumpsys deviceidle sys-whitelist -com.android.cellbroadcastreceiver

adb shell dumpsys deviceidle sys-whitelist -com.android.cellbroadcastreceiver.module

adb shell dumpsys deviceidle sys-whitelist -com.android.emergency