Fix: Untrusted Developer your device management settings do not allow using apps from developer

Hello, If you are using iOS and getting this error message “Untrusted Developer your device management settings do not allow using apps from developer…” and you can’t open the app, then do the following:

Go to settings –> General –> VPN and Device Management

Inside the last option you can find something like this:

You can see the Option: DEVELOPER APP.

You just need to click on the specific developer name or email id and make it trusted.

Recently I updated my Xcode 15 to Xcode 16 and Update iOS 17 to iOS 18. Now when I try to run my Xcode project (SwiftUI) on my physical iPhone, I get this error:  “Verify that the Developer App certificate for your account is trusted on your device. ” on Xcode and on my phone I got Untrusted Developer error.

By following the above mentioned steps you can fix it easily.