There are probably too many features in iOS 8 that makes it impossible for Apple to announce each and every single one of them. However during the presentation, there was a feature for Wi-Fi calling on one of the slides that Apple did not touch on. However T-Mobile has spotted it and has since announced that they will be enabling that feature for iOS 8 users when the software is released later this year. T-Mobile estimates that with this feature being enabled for iPhone users running on iOS 8, over 90% of smartphones on T-Mobile’s network will feature WiFi calling, which is pretty amazing actually.