I have an original iPhone with the 450 minutes + 200 texts plan. My uncle has a 3G iPhone that he doesnt use anymore since he got a 3GS iPhone. He said he would give me the 3G since i dont want to buy a 3GS now because the 4th gen iPhone will probably be coming out in early summer like usual and i'd rather just wait for that. I have an upgrade for my original iPhone, obviously, but I just want to know if switching to the 3G phone my uncle is going to give me will cost me that upgrade even. I just want to be able to buy whatever new iPhone comes out this summer at the subsidized price and not have to shell out a ton of $$$ for the entire price of the new phone. Any help, greatly appreciated.