Transferring information old iPhone to new iPhone, new carrier
I bought a new unlocked iPhone at an apple store. I was given a SIM card for t-mobile. I am currently using Verizon. . I havent changed carriers yet. I plan to transfer from my old phone to the new phone. Should I go have the carrier get the new account set before I transfer the information or should I get the new phone set before going to the new carrier.
iPhone 5, 10