This is a Menu Button Flex Cable for the iPhone 3GS. This has the clicking mechanism for the menu button. If your menu button still presses but does not cause any action to occur, you probably need this part.
For over 13 years, Powerbook Medic has been providing parts, repair, and service for a variety of gadgets. In that time, over 300,000 orders have left our facility for US and international destinations to help save old devices from the landfill and bring them back to working condition.