I investigated again my brother’s X10.
Findings / Reverted back to stock Android 9;
current drain measured with AccuBattery app: about 140-250 mA consumption
Findings / After re-flashed to SFOS 4.4.0.68;
current drain measured with Battery Buddy: 4.1.1-1: about 330-400 mA consumption
(same figures as before the re-flashing)
All of the above: NCF off, BT off, WLAN on, Mobile data off, screen brightness Android: mid, SFOS: lowest
Now… there is something “fishy” with Sailfishy here.
Can it be that cores are programmed wrong, not letting some of the cores go to rest/sleep mode?
Related to these topics possibly maybe:
High battery drainage Xperia 10 III - Bug Reports - Sailfish OS Forum
???
It might be just a conspiracy theory, but feels like AOSP device configs have so many flaws and misconfigurations that Sony is either doing them on purpose or don’t care about AOSP at all and doesn’t give a **** about it to get it right…