With this Mate 40 phone case in black, the entire back is well protected This Mate 40 case is mounted in no time. Simply put the cover over the back of your Mate 40 and the entire back of your smartphone is protected. Shocks are absorbed thanks to this rubber phone case. Scratches, dirt and dust can not harm your smartphone with this Mate 40 case in black. Of course, all ports of your phone are still accessible.