(12-27-2021, 07:29 PM)nelstomlinson Wrote: My PP has been sitting on my desk for about an hour. It has discharged from ~95% to 70%. All it has been doing is turning itself on every 5 minutes, and heating the room. No apps are open, no calls, no nothing. It didn't use to do this - I used to get around 8 to 10 hours on a full charge, same as you. At some point it stopped suspending, and started waking up every 5 minutes, and that has ruined the battery life.
Removing the SD card might help, as I was told elsewhere.
In my case that indeed was the problem:
Without an inserted SD card the phone sleeps like a baby again.
If you cannot do without an SD card, downgrading to Kernel version 5.13 or 5.10 seems to help.