So by unlocking the Iphone, i know the 2.1 can only be unlocked and not jailbroken, i can use any tmobile sim card on a new Iphone.. I can also go through my favorites and all that junk? I did do some reading but nothing clearly confirms it and i dont really want to go and buy the phone without a confirmation. Im not planning on using any networks ony the wifi i could get around places. I would also be able to use my text messages and all the features and applications that come with the phone? Last thing, should i start the phone update to 2.1 then do the hack or do the hack then update to 2.1? thanks