Jailbreaking the iPhone 4 involves following steps: 1. Open Safari on the iPhone 4 and visit jailbreakme.com, then swipe to jailbreak when prompted. This will download and install the jailbreaking software. 2. Once installed, a Cydia icon will appear - click this, then click "User" and "Sources" to add a Cydia URL. 3. Choose the "User (Graphical Only)" option to access customization apps like WinterBoard for changing icons, wallpapers, and sounds. WinterBoard is a free app available through Cydia that allows customizing almost every visible aspect of the iPhone, such as using video files as wallpapers. It provides