Word on the street is that an update will be hitting the iPhone 5 on April 5th that will turn on access to T-Mobile's LTE network on unlocked GSM models. While you'll have to wait until April 12th to pick up the iOS handset direct from the magenta-hued carrier, those who have been running rogue with unlocked devices from AT&T or purchased direct from Apple should soon be able to run at full, blistering 4G speeds. (Where the fledgling network has been
