I'm living in the US but not sure until when. I bought an iPhone with 2 year contract. If i'm going to leave the US can i just throw AT&T's SIM card away or should i pay the early termination fee. Also, I'm not planning to use the SIM Card anymore when I leave or even if I came back. I'm afraid they are going to make me pay for all the month's i was not using the SIM Card. I prefer not to pay for the early termination fee. I mean will AT&T automatically cancel my account if i'm not using their service anymore??