A leaked T-Mobile internal document shows that there will soon be a carrier update that will allow T-Mobile's network to officially support iOS. Those with iOS 6.1.x will be able to use VisualVoiceMail, MMS and T-Mobile's LTE pipeline. That means that those of you who use an unlocked iPhone 5 on T-Mobile will be able to get 4G LTE speeds. The update should take place on Friday and from that moment on, it will be a whole new world for you unlocked Apple iPhone users on T-Mobile. Just make sure that you are running iOS 6.1.x. You know what? Why not just make sure that you're up to date with iOS 6.1.3. Just remember that only 7 markets are covered with the carrier's LTE signal at this time, but that number weill grow rapidly during the year.
T-Mobile's carrier update will allow unlocked Apple iPhone 5 units to run over the carrier's LTE pipeline