Hahaha thats not true at all. My friend has the 4s (as do i) and she doesn't have 4g on it. Its the iPhone 4, also its not the iPhone 5g just in case you were confused about that too.
I jailbroke my original iphone by clicking home 5 times then holding lock button for 15 seconds. Im guessing that still works. Something will pop up saying what you download and stuff
i wonder how the original iphone holds up on simple tasks now. does it lag when you scroll the home page? my dad has the first ipad and it is slower than a turtle. i swaer apple makes them so that they slow down when the next gen comes out