Facing network singnal issue.

This was big update so i recommend you to do certain task.
Perform the given resets beginning with mobile networks, if not solve move next reset all settings. Still not ?

Then a factory reset will be your option but do take backup .

Later tell me if this works or not.

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your concern kindly visit this mentioned link to resolve your Galaxy device network issue: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-smartphone-how-to-optimise-network-connectivity/

In case the issue still occurs, kindly report the problems with a log file. To share a log file, click on the Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).

Warm Regards,
Samsung Customer Support

Kindly complaint to Samsung customer support through Samsung Members App as error report also send log files Along with this error report for this issue and wait for next update may be fix it by Samsung team soon. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.

Your's most welcome to here.