Putting AT&T Simcard in Verizon Phone
Good afternoon! My phone recently crashed for unknown reasons and due to financial issues I am looking at buying a phone from a third party. The phone that I am looking at was previously activated with Verizon. According to my research, it may still work with an AT&T simcard. Is this possible, or do I need to buy either an unlocked or AT&T phone in order to activate it with AT&T service? It is an iPhone 6. Thanks!