Missing signing certificate. Netease Mu Mu Simulator is an Android Simulator computer software developed for mobile gamers. The certificate is invalid because the installation package is corrupted and the signing certificate is missing. The simulator can experience mainstream mobile games and applications on the computer big screen, and enjoy the silky game experience brought by the high-frame picture of 120 frames. Multiple functions, such as multi-opening, recording and hanging up, intelligent mouse and keyboard operation, can meet different game needs.