With this blue Galaxy A21s phone case, the entire back is well protected. This Galaxy A21s case can be mounted in no time. Simply slip the phone case over the back of your Galaxy A21s, and the entire back of your smartphone is protected. Impacts are cushioned thanks to this rubber phone case. Scratches, dirt, and dust won't harm your smartphone with this blue Galaxy A21s case. Of course, all ports of your phone remain accessible.