Hey all, sorry if this question has already been posted. I am planning on activating my iPhone with ATT for use here in the US, but I also will be traveling to Venezuela frequently this year, so I want to purchase a SIM card there that will work with the iPhone as well (I know that Digital and Movistar both work). I am wondering if it is possible to use the iPhone with two different SIM cards. Obviously, I'd use the ATT one when I'm in the US, but I'd like to replace it with the Venezuelan one when I am there. Is this possible, and if so, how would I go about doing this? Would I first activate the phone for ATT, then unlock it once I get to Venezuela? Any advice would be great. Thanks!