Huawei's mobile phone prompts that the signature is abnormal, and software of other platforms is not allowed to be installed. Do you want to die?
1. To install software from unknown sources, you need to turn on the security option on your phone and allow the installation of software from unknown sources. Turning on this option means that your mobile phone software is stolen and cheated, and the mobile phone manufacturer does not have to bear any responsibility. If the software is installed from the vendor's own software mall, the vendor is responsible for any problems. This is the difference. You can find your own settings-security-more security settings-and turn on "Allow installation of software from external sources".