Wifi calling and call over voLTE Samsung S7 edge

[woozle_a]

I have a open (non-O2) samsung s7 edge updated to the latest firmware and wanted to use wifi calling as mobile signal is alomost non-existent in my house.  I contacted an O2 guru and thye said I could not do it on a non-O2 phone.  I re-read the O2 guidelines and found the 4g / wifi calling under device details and requested it tuned on.

Before this the volte calling option on my phone was shaded out, but a couple of hours after requesting the account tuned on it becam avaialble and now I have wifi calling.

Wish O2 would get their advice correct and consistent. Now i don't need to change to EE or whatever.

Thanks

[Anonymous]

Hey @woozle_a

As far as I'm aware Wifi Calling is only available on Phones bought direct from o2 and has o2 Firmware.

[MI5 · Accepted solution]

There are a number of devices which do not require O2 firmware.
Explained here https://www.o2.co.uk/connectivity/wifi-and-4g-calling