I'm planning on getting an iPhone 3G on eBay or craigslist and unlocking it to use with T-Mobile. I heard that with the old T-Zones plan, people were able to use it as an iPhone data plan. They don't offer that plan anymore and now they have a $9.99 unlimited web plan and a $19.99 unlimited web and messaging plan. These are for regular phones (non-smartphone). I have an unlimited messaging plan which I plan to replace with the unlimited web and messaging plan so I can use it with an unlocked iPhone. Does anyone know if this plan will work with the iPhone? Or will I have to buy the $34.99 smartphone unlimited web and messaging plan? Somebody please reply I really need to know!