Also, can this iPhone be used with a T-Mobile SIM card? http://www.amazon.com/Apple-iPhone-4S-16GB-Black/dp/B005SSAXSI/ref=sr_1_3?s=wireless&ie=UTF8&qid=1430918465&sr=1-3&keywords=iphone+4s
Read more: Is this iPhone unlocked, even though it says AT&T?