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$14.99Iphone 4S Proximity Light Sensor Flex Cable Power Button Cable + 6 Piece Opening Tool Kit + Torx Screwdriver + Zeetron Microfiber Cloth (9 Piece Do It Youself Kit)
If you put your iPhone 4S to your face and the screen doesn't get dim this is the item you need. If your power button is also not working this flex cable replaces your old one as well. It comes with all tools, torx screw driver ...