When the feature was discovered, it was also revealed that the feature, while supported by iOS 9 at that point, wasn’t available for testers just yet. Now, though, it would appear that the feature is being rolled out in some regions, as reported by 9to5Mac. With this feature, AT&T subscribers will be able to make cellular calls from their iPhone 6 and/or iPhone 6 Plus on a Wi-Fi network, when the cell signal isn’t strong enough to handle the call.
As the initial report outlines, iOS 9 beta testers under AT&T’s network umbrella can head into Settings and and then into the Phone section. There should be an option to select Wi-Fi Calling. Once in there the only option will be to enable the feature. Once that’s done the on-screen instructions will guide the user through the setup process — as long as they live in a region where AT&T is testing the upcoming feature.
While AT&T wouldn’t comment on the rollout, the initial report does say that an unnamed source confirmed that the feature is now being tested in some regions, so a lucky number of iOS 9 beta testers should be able to access it right now.[via 9to5Mac]