The Mobile Phone Plastic Middle Frame is a core, integrated injection-molded structural component. Typically made from PC-ABS or glass-fiber-reinforced PC, it is manufactured using precision thin-wall injection molding. It integrates features such as screen positioning slots, mounting points for the motherboard and battery, camera cutouts, button mounts, screw bosses, and antenna channels. The frame serves to support and secure the screen, motherboard, and battery while providing shock absorption, drop resistance, and electrical insulation. It is widely used in budget smartphones, feature phones, and 5G devices; some designs utilize insert molding—incorporating embedded metal nuts or reinforcement plates—to enhance structural strength.
