Well, it's just that the application makes sure that you have damaged the contents. For example, his program inside the application has been damaged. At this time, you can do this, then find the application and delete all its data. It is not an application. It can be said that there is unloading, step by step unloading and then deleting, because all the data in it is then reopened and tried. In other words, the internal program signature of this application is that you have to sign your personal name and fill in your name, so this application also needs to sign.