TP touch screen test The TP touch screen must be installed on the smartphone to realize the operation. Like the display screen, the TP touch screen is an indispensable and alternative component of the mobile phone screen. The TP touch screen consists of touch detection components and a touch screen controller, which are generally fixed to the motherboard through connectors. The touch screen is the external screen of the smart phone. It is installed in front of the display screen. It can detect the position touched by the user and send it to the touch screen controller to execute the r…