In line with its launch previously announced launch plans, T-Mobile USA today officially launched the iPhone, offering the iPhone 5 nationwide and the iPhone 4S and 4 in markets where the devices are supported on its network. The T-Mobile iPhone is also available through Apple's online store at full price with interest-free financing offered through Barclaycard. TechCrunch notes that some T-Mobile retail stores are seeing small lines this morning as customers seek to purchase the device using under T-Mobile's new
