The successfully signed software will have a security warning when put in the mobile phone: This application is for development only. Continuing the installation may cause serious problems with the equipment. The reason why the mobile phone gives a security warning is because the software is not officially released by the mobile phone platform. Generally, the rogue behavior of the software made by a third party, such as a person or a studio, cannot be confirmed, so the mobile phone will give a warning when it is installed. Under normal circumstances, the software downloaded from well-known websites and formal channels should be harmless. Will not affect the phone, rest assured that the installation and use!