Following its joint announcement with Apple regarding official support for iPhones, T-Mobile will be sending out a carrier software update on April 5 to enable unlocked original iPhone 5 units to access T-Mobile’s LTE network, as well as previously authorized carrier-limited features such as Visual Voicemail. A report notes that the update will go out this Friday to all iPhone devices on the T-Mobile network using iOS 6.1.x or higher; carrier…
