It was off and I tried to turn it on. First it wouldn't start, then it said it needed recovery so tried that, and recovery failed. I had plugged my iOS 26, iPhone SE 2nd edition from 2020 to my Mac, because I have a backup, but before I tried anything, it started by itself, I was able to enter my passcode and it seems to be working.
Very scary.
I am going to update the backup now.