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This article discusses software internally used by Apple.

Acquiring a copy without Apple's consent is illegal and may result in being scammed.
Engaging in illegal activity is not condoned. This information is provided for educational purposes only.

The LcdUTest Icon (Before iOS 6)
The LcdUTest Icon (iOS 6 and up)

LcdUTest is a SwitchBoard application used to test different aspects of the display. This application was redesigned for factory firmwares on 6.x and up, switching away from the purple tinted icon to a newer, more vibrant one instead.

Upon opening the app, you are presented with a bright white screen. Double tapping the screen presents you with a "Setup Options" panel, where you can adjust various details of the screen. This panel also allows you to choose between three different sets of images indefinitely; FATP, IQC, and OTHER. Using volume up and down or tapping the screen allows you to choose between various provided images. Holding down the home button brings up a menu which allows you to cancel, quit, or shutdown the device.

The Contents of This App