I installed beta a month ago and imy battery life changed from 100% to 93% in one week, how is that possible? And my battery last barely half a day. It seems like I must buy new phone now…
I installed latest beta and my battery is so bad right now.
It's a beta. There are a number of system processes and diagnostics processes running that aren't present in a released (non-beta) OS.
I wouldn't install a beta on your primary device.
If it's not good for you, uninstall it and go back to the latest version of iOS 17.