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iPhone 4S have two cameras one is front and one is on back. If you hae facing the problem with camera not working well then you can replace the camera with a new working one or clean the camera point to remove water damage. In this post you have given Apple iPhone 4S Front Camera not working problem solution done with making jumpers. With the help of multimeter trace the point shown in the diagram and make jumpers. Hope you will be able to solve your problem. Here is iPhone 4S Front Camera Jumper solution.