How to call the function mode of one hand and one machine

  Mobile phone or Apple phone, whether it's a computer or an installation IPA..APP, Or opening more software basically requires many tools and steps , You have to shell out the program first , This makes it an installable program , Then use the signing certificate to sign the program , Before it can be installed on the mobile phone . Of course, you can also directly use the mountain pig sign to complete these steps on your mobile phone , And don't worry about the certificate. This is also a way