Hi I am a little new to the forums but I did do a little research and I couldn't really find an answer so I figured Id ask. I am really sorry if this has been answered. Anyhow here is my question. My cousin has an iPhone 3GS and is getting a new 4th gen. He said I could have his 3GS but I am on Tmobile. I have a talk and text plan but no data. I can not pay for data. I dont want it because wifi works for me and plus you can only get edge anyway. I was wondering if I unlock and jailbreak his iPhone and put my sim card in it will I be charged for data just by having it. I wont connect to edge obviously but will Tmobile know I have an edge capable phone and charge me for it? Basically I want the 3GS to work like the fist gen iPhone where you dont have to worry about data. Thanks