iPhone 4S is the fifth generation of the iPhone, succeeding the iPhone 4. The iPhone 4S retains the exterior design of its predecessor, such as the 3.5-inch Retina display with a 960×640 pixel resolution, but iPhone 4S added a voice recognition system known as Siri and a cloud storage service named iCloud. After daily use, your iPhone 4S may suffer from wear and tear. Then you have to repair it. ETrade Suppy offers various replacement parts for iPhone 4S. You can find the detailed product information following.