The description file in iPhone settings is a settings file, but it is actually an XML file, not a certificate. The receiving date and expiration date of the description file are the date when iwork is authorized and the date when the authorization expires, which has nothing to do with the mobile phone.

It is best not to delete it easily, which may make the plug-in or software unusable. ? If the software or plug-in has been deleted, you can also delete the description file of the software or plug-in at will.

Extended data:

There is no solution to the configuration file in Apple's mobile phone settings:

1. Usually, you need to use a description file. After installing the software normally, you should trust the application. Let's operate together! First, enter the setup interface of Apple's mobile phone.

2. In the setting interface, find General and enter the general interface.

3. Pull the interface to the bottom, or a trust file appears, or device management.

4. After the mobile phone is upgraded, it is equipment management. Click Device Management to view enterprise applications.

5. Click on the enterprise application "Beijing East Branch Technology" to see your trust in this application. Because the software of has been trusted, here is to delete the application.