Wifi calling use to work on my Oneplus 6 but is no longer an option in the device setting menu, even my O2 shop could not explain the problem. The Oneplus 6 is listed as O2 Wi-Fi compatible on the O2 website.
Any help would be appreciated.
Still working OK for me on my OP6.
I assume you have rebooted the phone?
Check the path to settings.....
Settings >WiFi and Network >Sim and Network >SIM 1 (and then SIM 2 if you have 2 sim cards in).
Very strange @Abernyteman
No difference in phone or software to mine.
Are you running 2 sims or just 1 ?
Maybe try moving sim/s around?
Let us know when the wife gets home please.
Many thanks for your suggestions above and sorry for not getting back to you sooner - domestic events.
Alas although I have now properly rebooted the phone, and moved the sim card to the other slot neither have resolved the problem. I have noted on the O2 website that although they say the Oneplus 6 does provide Wi-Fi calling it now also only mentions android versions 8 and 9. I have taken screenshot of the relevant menus and have attached them.
@Abernyteman have you tried giving O2 customer services a shout (even though you were in the O2 shop) WiFi calling is generally a carrier provided feature. Just to make sure that it is still turned on from O2 side. Just grabbing at the proverbial straw....