3 ms·

I believe apple has supported this with the iPhone for several years now.

• DiabloD3 11y ago
  As has Android, but AT&T and Verizon tend to lock out features like HD Voice and Wifi Calling to be iPhone only.
  • X86BSD 11y ago
    T-Mobile is what I have. I think they were the first? But it sounds great on T-Mobile. I usually just talk to the wife both of us on iPhones and T-Mobile. And then I get the occasional call from someone else and I am like "What the !@# get a decent connection/phone/whatever!"