There are two reasons for this problem: 1. The phone is not turned on to allow installation and operation of unknown sources; 2. Part of the mobile phone installation process requires manual intervention in the installation process. If you do not click install on the phone, the installation cannot be completed (Some Android phones have set permissions and restrictions on the operating system). Solution: 1. First, you need to enable the installation of unknown sources on your phone. 2. Plug and unplug the phone again, watch the installation prompt that pops up on the phone, and manually install according to the prompt.