Mobile phone corner protection device

The utility model relates to the technical field of mobile phone corner protection. The utility model relates to a mobile phone, in particular to a mobile phone corner protector. INCLUDING A FIRST LATERAL PLATE, a first through groove is formed in the first transverse plate; a bearing is fixedly connected into the first through groove; a screw rod is connected into the bearing; a second transverseplate is movably connected to one side, close to the screw rod, of the first transverse plate; a threaded groove is correspondingly formed in the side, close to the first transverse plate, of the second transverse plate and in the position of the screw; first side plates are fixedly connected to the lower portions of the first transverse plate and the second transverse plate. A second side plateis movably connected to one side, far away from the first screw rod, of the first side plate; a square plate is fixedly connected to the end, close to the second side plate, of the first side plate, agroove is correspondingly