S21 Ultra No Network Conection after the last Update

[Juan greenfield]

Hi, I have a S21 Ultra since late January, I had issues in the past but now since the last Update 3 days ago My Mobile Network stopped working, I have an (Ø) symbol not even empty bars, the SIM card works great on other devices, but non SIM card works on this device, I tried reseting the network settings, Wiped cache partition, factory reset, airplane mode on and Off, looks like the antenna stopped working completely, not a single SIM card works on this device.

I have Wifi connection but is not what I bought this phone for, I want network service, is there any other solution I can try?

 

[tploumen]

Get your mainboard replaced at the Service Centre.

[Hassank]

☹️

[SEPPO77]

And no it stopped working again.. 1300euros and piece of sht.. 

[tploumen]

It seems to be a hardware issue. A mainboard replacement is the only fix.

[gpaolo79]

Yesterday my phone updated itself to Android 12 and both sims started to disconnect randomly, even during phone calls. 

Is there any way to restore the previous version? I bought this phone in Italy three months ago...

[GoldFire369]

Did maybe someone try or have esim

[deedpool]

I moved to  a esim and it's still an issue iv got. 

[Saad782]

Hi i am from UAE,

i faced the similar issue no signals after Dec update. I took the phone to one of the service center, they flash the phone and installed software again, now its working fine. But i lost all the data 😞

[Hassank]

I did the same and problem restarted within 1 week from the new software installation:(

[tploumen]

This won't help. Please go back to the service centre and ask them to replace your mainboard.