SpringFlash - It is a springboard Activator-based application that takes advantage of the iPhone 4 LED Flash to serve as a flashlight. You can have a touch of a button for a bright LED flashlight without hassling with unlocking your iPhone, closing your app, or even turning on your screen. To install SpringFlash, you need to jailbreak your iPhone 4.
I just deleted the flashlight app from my iPhone 4—this is SO much handier!
People don’t realize that the three most dreaded words to a guy are actually “notice anything different?”