Verizon iPhone 5C to AT&T?
A few years ago I bought an iPhone 5C compatible with Verizon (post-paid) at Best Buy. I paid full price for the phone.
When I left Verizon for T-Mobile (prepaid), switching providers was as simple as taking the Verizon SIM out and putting the T-Mobile SIM in. Everything worked as it should.
When I upgraded my iPhone 5C to an iPhone 6 earlier this year, I gave my iPhone 5C to a friend who uses AT&T (post-paid). The phone works on the AT&T network, but he's limited to 4G data only — it will not connect to AT&T's LTE network.
My question: Is this phone not compatible with AT&T's LTE network, or is there something my friend needs to do (contact AT&T or something else) in order to get the LTE to work?