WiFi calling in OneUI 3.0

[BiscuitPiano765]

In the beta and still in stable OneUI 3.0 my WiFi calling option keeps disappearing.

It is there every time straight after a software update, but then and time the phone turns off/restarts, the WiFi calling setting goes away, and you can't find it even by searching in settings.

Even weirder, when I just did my first restart since the stable update, I immediately checked my quick settings and it was still an option, and then I watched it disappear. 

This happen to anyone else? I'm in the UK unlocked.

[catj85]

I have the same issue some one said to restart the phone without the sim card in which I did and the WiFi calling option was there again but i since restarted my phone and its gone again I'm on 02 I'm so confused 😕

[BiscuitPiano765]

Did you use the beta at all? couple of things I've learnt. A 3 SIM works in the main sim slot and immediately WiFi calling shows up again. if I put the O2 sim back in then it goes again. also if I just put the O2 sim in the second aim slot, the hybrid one where the SD card normally is, then it works again! It's almost like O2 is blocking WiFi calling on my primary IMEI number in SIM slot 1, maybe because when I was on the beta they saw it as insecure, so maybe it's a safety thing their end?

[BiscuitPiano765]

just been doing more investigating, did you use the One UI 3 beta at all? I can get WiFi calling to work on the O2 sim but only when it's in the hybrid SIM slot 2, where the SD card normally is.

[Starone]

I had wifi calling before upgrade to ui 3.0 then it vanished from menu, 2 weeks later it appeared again with no change being done and now 11 days later its gone again after a reboot of the phone

[CatalinMarius]

You are the best man!

Thank you very much for your information