Well, the Galaxy S8 is affected as well, and absoutely NONE of these solutions has worked.
As one user already said, I don't believe this!
Forced update of all apps? Really?
Bravo, Samsung. Guess what brand of phone I'm NOT getting next?
Downgrade back to android 9.i did because I had battery issues abd VoLTE wasn't working like it should.
UPD: Before hard reset I tried one more thing: forcedly updated all apps and reset cache partition one more time. Surprisingly it helped at least partially. Phone doesn't die in the mid of the day at least.
I have noticed that once turned on (I turn it off every evening) battery drains to 96% in a minute... Before it was 100% at least a few first minutes of usage.
I guess that new software is doing some heavy work in background during startup time.
I wiped the cache now, we'll see! Thank you for reminding me!
I experienced the opposite. Oreo had great battery life and Pie had poor battery life even in power saving mode, which I had to keep on permanently. With Android 10 battery life is great again, I think it has a more aggressive doze/sleep mode to police background activity which really benefits a light to moderate user.
According to my observations when phone is not used it keeps battery pretty good indeed. Drain happens during active use but I do not do something fancy - photos, some Pokemon Go playing, navigation etc. I did the same things before upgrate and battery lived longer. System shows the Google Play services consume the most of the power.
The same thing happened to my old poor S7 after the last upgrade (it was the reason for switching to S9).