Apple ipod

"I can use EDGE internet on the iPhone with a prepaid SIM card T-Mobile?

If so, what is the best way to allow Internet U.S. EDGE T-Mobile? Tzonis are free with prepaid plans, but what is the best way to operate on the iPhone 3G/3GS?

The only way is to break the prison. Once you jailbreak and unlock the iPhone, you can use like any other phone.

How to Get Free Internet on iPhone With T-Mobile on 2G, 3G, and 3GS