ok so im a big fan of the iphone but i cant afford the monthly cost, so iv been trying to come up with the cheapest way to have an iphone. i am thinking about getting an iphone for $199 and signing up for the 2 year contract, then after the first month of service canceling it and using the monthly gophone plans. i dont use the internet that much so i just plan on turning the at&t network off and using wi-fi where i can. will this work? can i just put in the gophone sim card after i cancel the contract and it will work?