okay so my best friend got the iphone four and gave me her 3Gs.
i have sprint right now so ive just been using it as an ipod and stuff.
but it wont let me do wifi..
when i go to the "settings" thing, where it says wifi it's dimmed and says no wi-fi
so i have NO idea how to get it. haha
and what is jailbreaking? what does it do?