[ericerjames]

Originally Posted by jshadeck

Check google, theres alot of really good blog posts that show up covering this in great detail. Quick n generic, its free, its easy, the jailbreak itself does nothing to your device, what it does is gives u cydia, a non apple controlled app store (so much more than "apps") and allows you to literally change,tweak, add features and usability that i have been missing since the day the i5 came out, im now right back where i was w the i4S and sooo happy

Untethered jailbreaks do not require a computer. Everything required to enter the jailbroken state is contained on the iPhone.
See more: Six Disadvantages of Jailbreak Released by Apple