How to Jailbreak/Unlock iPhone 2G Firmware 2.2.1 | Step-by-Step Guide

We have already talked about meaning of unlock iPhone and jailbreak iPhone. Three core benefits of jailbreaking iPhone includes: Modifying look and feel of iPhone (GUI) Install cool application to use cool advanced features like Bluetooth, GPS, Touch Screen, etc Running application in background that apps from Apple App Store does not permit.