AT&T related help: Welcome back
HELP! AT&T's forced update to next Android version (with One UI 5.1 etc.) bricked my Samsung Galaxy S21 Ultra 5G
Over the weekend, I got the usual message to update Android OS, and it was compulsory (i.e. I couldn't reschedule it more than 3 times). Before the update, the phone had been working fine, no SIM card or battery issues etc. After updating, everything went wrong:
* Phone stopped recognizing the SIM card (even though I'd never taken it out etc.), giving Settings errors even when trying to click on the SIM manager
* Phone battery started draining very fast (and hot), even when not doing anything on phone, and nothing running in background.
I have a Samsung Galaxy S21 Ultra 5G, and the (compulsory) Android update was to One UI 5.1, G998U1UEU5EWB1 / G998U1OYM5EWB1 / G998U1UEU5EWB1, security patch level February 1, 2023.
I tried the following already:
* Reset network settings
* Factory reset (so I can guarantee there's no weird apps or settings that could be interfering)
* Went to AT&T Store and they put in a new physical SIM card (didn't work), then a new eSIM card (also didn't work)
* AT&T Store asked me to call Tech Support, which I did, they changed some settings on their end and said it should work within 3-4 hours of propagating (also didn't work).
Note: as far as I can tell, there is NO WAY to rollback the Android update, or I would do that!
Tech Support are now saying the phone is bricked and I should claim a new one on mobile insurance. However, as far as I can tell, this is a problem of AT&T/Samsung/Android's own making! They forced me to update the Android software, and that's what caused all the problems - plus wasted so much of my time on the weekend :-( I'm asking for advice on:
1. Is there a fix for the phone problems that I'm unaware of?
2. What should I do? Given AT&T is responsible, how do they fix & pay for this?