Went through the whole process of backing up and factory resetting my phone. Device appears to be functioning correctly. Again on Android 14 and with the SIM card installed. Pain in the ass, but nice to have a functioning phone again.
I have the same exact problem. Upgraded to Android 14 about a week ago. Restarted for the first time today. And now my device goes into a boot loop whenever my AT&T SIM card is installed.
