To reproduce:

1. Start Unity and open and create a New Project
2. Switch Platform to iOS
3. Press File > Build Settings...
4. Check "Development Build" and "Autoconnect Profiler" checkboxes
5. Build for iOS
6. Deploy the Xcode project to iPhone XR, iPhone XS or iPhone XS Max

Expected results: Built Player connects to Profiler
Actual results: Built Player fails to connect to Profiler

Notes:
- If You try to manually connect iPhone XR, iPhone XS or iPhone XS Max to Profiler, it is also fails

Tested with:
- iPhone 7 Plus, iOS: 12.0 - Not Reproduced
- iPhone X, iOS: 11.3.1 - Not Reproduced
- iPhone XR, iOS: 12.0 - Reproduced
- iPhone XS, iOS: 12.0 - Reproduced
- iPhone XS Max, iOS: 12.0 - Reproduced

Reproduced on Unity 2017.4.0f1, 2017.4.22f1, 2018.3.8f1, 2019.1.0b6, 2019.2.0b5 and 2019.3.0a5