Im having problems too with the iPhone 5 after I swapped its sim with a nano sim from an ipad mini with unlimited Lte activated. Now the iPhone 5 only shows "4G" and not LTE. When I turn off the LTE in the settings, it doesnt give me data at all (3g/4g), and when i turn it on, it only shows 4G. When I put back the nano sim into the iPad mini it connects to LTE so I know Im in an area where there is LTE (Los Angeles). The nano sim from the iPad mini has been activated with Unlimited data - LTE, and Ive downloaded the correct apn settings on the iPhone 5 for data to work. I already tried resetting network settings, hard reset, and restore as new iPhone, but it still wont connect to Lte. I have read in a lot of support sites from apple and at&t that the iPhone 5 needs to be "provisioned?" in order to connect to the LTE network. Is this true, like you can't just sim swap like GSM is supposed to work? Is there a way for the iPhone 5 to connect to LTE?