This is the iPhone 4 Series Power Button and Proximity Sensor Flex Cable Replacement. It contains the proximity sensor, ambient light sensor and power button flex cable. Dropping your iPhone 4 Series will often cause obvious exterior damage to the device such as a cracked screen, but it can also cause damage to the interior of the phone. In some cases it will result in damage to the internal flex cables for the iPhone 4 Series. When this happens, you don't have to spend a small fortune replacing the damaged smartphone. Instead, you can order this iPhone 4 Series power button and sensor flex cable. This replacement power and sensor flex cable for the iPhone 4 Series can restore your ability to turn your device on and off when necessary. It is high quality and designed to work perfectly with your iPhone 4 Series. This iPhone 4 Series replacement part is available in stock and is ready to ship.