Update S911U1UES5CXL7 - no longer receiving OTP messages with wifi calling

[jackb25]

Since update S911U1UES5CXL7, I no longer receiving OTP messages with wifi calling.

How do I back out this update? I just want a usable phone.

[Tourbillon De La Vie]

Did you clear phone cache partition

You probably did looking at your other post. 

Do you receive codes if on mobile data? Are you in US? 

[jackb25]

Cleared cache.

I receive codes on mobile data. When I move to a location with mobile data, I receive the 6 outstanding OTP messages. So it appears all I need to do with this update is sell my house and move.

Unfortunately, yes, I live in the US.

[Tourbillon De La Vie]

Can you restart the router where you are. Are the calls coming in on wifi calling. Might be worth checking in us forums rather in this uk/eu one. Also check with service provider in case their tech has a suggestion