S21U bad reception after upgrading to Android 12

[johnjohnny]

Hi.

After upgrading to OneUI 4 (Android 12), I have severe issue with my signal. The signal always switch to E even when 4G signal is strong.

Is there any solution? 

[johnjohnny]

I feel better now. I thought I'm alone on this. Thanks guys. Hope the next update will be the good news.
I already think to sell this device and go for iPhone lol.

[kienee]

iPhone also face weak signal connection.no perfect phone instead 3310nokia lol.

[johnjohnny]

I can tolerate with lightly weak signal phone. Just don't jump to E when you got fullbar 4G😅

[Benny678]

try *#2263#

[johnjohnny]

Currently I am using this when I need a reliable connection. But whenever I force LTE, I lose call feature as there are no VoLTE

[Daniel109]

I have the exact sam issue.

I hope Samsung fixes this ASAP!!!

[rol9239]

Same bro. Just hope they will update asap