Jailbreaking your iPhone allows you to have more control over your device. Control gives greater power over what you can do on your iPhone. But this additional control also gives you the power to accidentally damage your iOS device, so you must be careful. Some of the desirable things you can do after jailbreaking your iPhone include: Install any Apps, including unofficial ones not listed in the Apple App Store. Modify restricted settings. Add extra functionality. Tailor the look of your home screen. Remove the SIM lock so you can switch between carriers easily.