Huawei mate7 mobile game can't be installed. What happened?

Maybe the application format is wrong. Android only supports APK format.

If the application is not downloaded from the "application market", you need to set the source of the trusted program, "Settings >; Advanced settings > security, turn on the unknown source switch, and then reinstall. It is recommended to download and install the official version in the application market.

It is also possible that there is not enough storage space to install. You can use the Mobility Manager to clear the cache and system garbage, or uninstall unused applications and try again.

It is also possible that the installation package is damaged or downloaded incompletely due to poor network. It is recommended to delete the installation package and download it again.