The downloaded software cannot be installed for the following reasons:
1. The mobile phone is not turned on because of unknown source. This is an option added by operators to ensure that users will not install unofficial applications indiscriminately, which will cause disorder in the mobile phone system. Solution: Open the location source of the mobile phone.
2. The installation software prompts insufficient memory. Solution: Delete some useless third-party programs to free up the memory space of the mobile phone.
3. An error occurred while parsing the installation file. The apk file is not installed, but the suffix extension has been maliciously changed by others. Solution: Download through the formal green platform and try it in the software store.
4. Problems with the software itself Due to the openness of the Android platform, there are always some softwares that are incompatible with the system, and such softwares will also fail to install. To confirm whether it is a problem of the software itself, you can compare it with other models.