on 04-09-2020 08:59
on 04-09-2020 09:02
XA2 does not require specific O2 firmware:
https://www.o2.co.uk/help/network-coverage-and-international/wifi-and-4g-calling
I'd suggest calling O2 to ask for wifi calling to be enabled on your account, you can then turn it on/off from your MyO2.
on 04-09-2020 09:08
on 04-09-2020 09:52
on 04-09-2020 09:52
But not the XA2 @Keegkeeg
on 04-09-2020 17:08
on 04-09-2020 17:08
The XA2 is not mentioned, presumably as it is a bit older. As I have tried all other possible steps it seems logical to assume that the firmware is the solution as with most other Xperias. Sony have echoed that this is most likely the case.
on 04-09-2020 17:13
on 04-09-2020 17:13
It is on the list and not asterisked indicating the need for O2 firmware.