1. Click on the installed application. How to choose trust and open the software normally after installing an application in iOS 9 Sanlian 2. In the general options in settings, find the description file. 63. Select this application signature file and enter. 54. Click on the application signature description file and click on the blue signature name: 55. After clicking on Trust, this file can be used normally. (Note: iOS9 sometimes does not display the description file option when entering "Settings-General". Just enter it a few times.) For details, you can check the detailed tutorial on Sync Push...