If you are EE HTC One M9 owner then we have a great news for you, as now you can use carrier’s Wi-Fi calling as well.
EE’s Wi-Fi calling allows you to make calls and texts over your Wi-Fi connection meaning you won’t need to eat into your monthly allowances and can have signal all over your home or even on the London Underground.
The issue is you will need to have bought the phone directly from EE’s retail channels.