I will buy a used iphone on craigslist. But i know there are a couple versions to the iphone.. i really don't care about memory size as i only plan to use it for phone calls and maybe some video recording. I have tmobile.. now so i would assume i would need a jailbroken iphone.. i currently dont have internet on my tmobile plan but if i do upgrade to have web access will it work seamlessly on my iphone? which models would you guys/gals recommended? my budget is no more 250$ maybe some where is selling a iphone?