S23 Ultra no mobile reception after December 2023 update

[battlemaster8080]

My phone has no reception after December 2023 update. I reset my network but not working. Can someone help me out? Thanks.

[RedDogRabbit]

Voice, Data, WiFi or all 3? 

Pop out the SIM & Reinsert the SIM (power off first). 

Open the Samsung Members app & Click on Support & run the Diagnostics for the SIM, Mobile Networks & WiFi.. see you get any error messages?

 

[battlemaster8080]

Voice and Data. Wifi is working. I popped up the SIM and reinserted the SIM. It worked for a few hours. Now it stops working again. No errors when I tried diagnostics.

[RedDogRabbit]

Sounds like it might be the SIM card itself. Get a new one from your Carrier. The other possibility is that it is the SIM card reader in the device, which would be more of a problem to fix. You would need to visit a Samsung Service Centre to get it checked out by a tech, if a new SIM card doesn't resolve the issue for you. 

[Helenna]

Hi, I request you to please take the help from the given link and check.

https://www.samsung.com/ca/support/mobile-devices/check-the-sim-card-when-phone-calls-and-cellular-d...