Switched both our iPhones to Virgin sim only contracts a month ago. Previously had no problems with wifi calling on other networks even though our home signal is not good.
Now we cannot use wifi calling in any meaningful way. The calls either fail to connect at all or when they do the person cannot hear us.
Checked all the usual suspects .........
Network reset ..... done
Mobile roaming settings checked and Volte switched on.
Phones powered on and off.
Sims re-inserted.
Both iPhones x and xi are running up to date OS.
Can't bee the phones as they are both affected in the same way.
Any suggestions gratefully received before we decide to leave for another network.