....would be to try Virgin mobile as a prepaid service. No guarantees there.
The iPhone 4 cannot be used on a carrier that relies on service from Verizon, At&t or T-Mobile. Good luck.
So unfortunately I'm getting old enough that technology is starting to confuse me... If I have an iPhone 4, which was formerly utilized through Sprint (but no longer on a plan), can I buy a prepaid plan through another carrier and use it? Do I need to buy a sim card through the new carrier that I will be utilizing? (a.k.a. does the existing SIM card only work on the Sprint network?) Does the phone need to be 'unlocked'? Keep in mind, while I'm using these terms, I don't necessarily have a great understanding of what they mean. Sorry...![]()

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic