I'm a little confused. Are you saying you have Wi-Fi calling on your 6S with AT&T, but saintsfan doesn't have Wi-Fi calling on their 5S with AT&T?My BIL is on AT&T also, so I guess not. We have AT&T, but we have 6s's so no problem. That seems illogical, but perhaps someone can explain it to me?
Whoops! My apologies for the wrong assumption!Saintsfan doesn't have it on HER 5S
Thanks for the more technical explanation. Is that different from Verizon and T-Mobile which (I think) both support WiFi calling on the 5S?I think AT&T decided to only support WiFi-Calling on the iPhone 6 and above because the 6 and up support VoLTE. Because of that, they can do handoffs between the cellular network and WiFi seamlessly. Otherwise, your call would drop when you moved out of WiFi range or the quality of the network dropped.