An altered carrier update that has been modified by two hackers successfully increases the bandwidth available for iPhone 5 units on T-Mobile's US network, tests have found. The patch to the carrier update file, which was originally distributed to add LTE signal to the iPhone 5 using T-Mobile's 1900MHz band, works on both unlocked AT&T units as well as "native" T-Mobile iPhone 5 devices without requiring a jailbreak, though instructions vary for customers using jailbroken iPhones.
