回答: 讨论一下WIFI calling的功能？ 由 mooa 于 2015-11-04 11:30

Currently, T-Mobile has 23 smartphones that support this option, including the Apple iPhone 6S and 6S Plus; Samsung Galaxy Note 5 and S6 Edge Plus; the LG G4 and HTC One M9.

As for Sprint, Wi-Fi calling is available on the iPhone 6 Plus, 6, 5S and 5C only if its iOS software is updated to v8.3. A number of Android devices have the service as well, but to see if yours has it, you'll need to check through the handset's Settings menu.

Currently, AT&T offers Wi-Fi calling only for the latest Apple iPhone 6S and 6S Plus, as well as the previous iPhone 6 and 6 Plus.