I have an iPhone 5, and I don't have good reception at home, so I was hoping to use wifi calling after upgrading to ios 8, but I can't find an option to enable it. BTW I'm with T-Mobile carrier.
WiFi Calling on iOS 8 for iPhone 5 – Compatibility
iosiphonewifi-calling
Best Answer
According to the major WiFi-calling provider T-Mobile following Apple phones are compatible:
iPhone 5c
iPhone 5s
and iPhone 6 (+)