My RAZR broke so I decided to get an iPhone. From what I understand, the $30 per month additional data plan is not optional and I am forced to buy that. I don;t need a data plan. All I want is calling and texting, and for internet I'll use WiFi. I'm considering buying an unlocked iPhone 2G from eBay and getting a basic 450 minute plan with texting but without the data plan, and using the sim card in the unlocked iPhone. Would this work? I want to make sure because I'm buying soon.