Ok so i currently have a blackberry curve and i have a blackberry data plan ($30) and my friend just gave me his old iphone (yay!) so i put in my SIM card and all was good and dandy until i went to use the internet or a app that requires the internet and it says i need an iphone data plan...my question for you guys is, will it cost anything to switch data plans? because from my understanding, iphone data plans are the same price as blackberry data plans... im so confused =/.....help?