On the desktop of your Apple phone, click to open the Settings icon then select the General option to enter. Go to the General list menu and click on Device Management option to enter. As shown in the image below: click on Enterprise Apps option to proceed to the next step. Go to Enterprise apps screen and click on Trust option to enter.
The reason why there is no enterprise software management on Apple phone: the phone settings hide the device management. The way to restore it is: go to the settings interface of your Apple phone, find General, pull through the interface to the bottom, either the trust file will appear, or the device management.
Enterprise apps in the general function of the settings go to set the trust software, you can find it. ios15 enterprise apps are not downloaded from the appstore, so they are all required to trust the authorization. ios15 how to set the trust authorization? First click on General in your phone's settings menu. Then click on the VPN & Device Management option.
Trusted software settings in the general description file, to find the location of the specific steps are as follows: first of all, you need to download the third-party software in the Apple phone, open the software will show "untrusted enterprise developers". Then you need to go to your iPhone's settings and find the "General" setting.