I too am wondering about being able to use iphone without data. Here is my situation. My husband wants an iphone, on his current plan with ATT we have blocked data on his samsung phone, his phone is pretty basic anyway, he has never had data. I currently have an iphone 3gs with the unlimited data. I was going to get the new iphone 4 and give him my iphone 3gs. If I put his card in the iphone 3gs will he still have the data blocked and be able to use my old iphone without being charged for data. He is planning on using the wifi only and does not want to pay for data. He does not want internet and is happy to use the wifi.
Also if I need to jail break and unlock the phone for him to be able to use it without being charged for data will he

be able to use itunes to get apps, or is there another place I can go to get apps that will not affect the jailbreak and unlock?