Do you want to “break” free from restrictions set by Apple and your service provider (carrier) ? Do you want to download and install cool themes, custom ringtones, additional applications ? If you answered YES … you need to jailbreak your iPhone and install Cydia. All this can be done under 3 minutes or less !
Developed by Jay Freeman (a.k.a. Saurik), Cydia is one of the most popular post-jailbreak apps since it allows you to download premium apps and tweaks on your device.