1. Click on the installed application.

How to choose trust and open the software normally after installing the application in iOS9

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2. In the general options in the settings, find the description file.

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3. Select this application signature file and enter.

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4. Click on this application signature description file and click on the blue signature name:

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5. Click 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...