Even though jailbreaking is more accessible to iPhone users than ever before, some may question whether or not apps developed outside the App Store are really necessary. The fact is that Apple limits some functionality for security and other reasons. Here are two great apps that make it possible to do more with your 3G connection if your iPhone is jailbroken.
Auto3G switches your iPhone's 3G cellular data connection to EDGE (2G) automatically every time you lock your device. Why not stay connected to the 3G network when the iPhone is locked? Battery life, that's why. Your battery life can be extended when the 3G network is only used when necessary.