No network since recently update

[Mimi-2025]

Since the update i have lost network. Anyone know how long this will take. Without WiFi I have nothing!

[Rittersfred]

Same problem: I updated my S21 FE from version "September 2025" to "November 2025" (UI 8.0) and I have no service anymore. The phone doesn't ask for the PIN code of the SIM.
Has anyone found a solution meanwhile?

[Jameswarrant]

It's happening to a lot of phone. No wifi at all .etc .samsung messed it up with their latest ui8 update

[amlyivanoe]

Same Problem. Doesn't see the SIM Card

[UKPops]

I've just got the November security patch and my S23 Ultra is back to normal except for the high battery drain.
Bluetooth and wifi now working ok . . . . . . ! 🥴 I'm in the UK

[Aflin]

Same issue here. After updating, can't connect to towers. Zero bars. Galaxy S21 FE here. The AT&T store said it's a known issue from Samsung.