Not all 4G networks are created equal. The iPhone 5 officially hit T-Mobile on Friday, April 12, but not all T-Mobile iPhones are created equal. You can buy a phone from T-Mobile itself, or an unlocked one from Apple that comes with a T-Mobile SIM, but not every iPhone for sale is compatible with T-Mobile’s 4G network. Many customers are going home with an older version that’s not compatible with T-Mobile’s network, defeating the point of owning a 4G LTE device. The problem is that many T-Mobile and Apple Store employees aren’t aware of the difference. [More]