Xcode Instruments shows Device is offline

Question

I have been trying to run the app to check the performance using Core Animation profiler in Xcode Instruments. Even though the device is online it shows up Device is offline.

I tried getting the work done as per the various suggestions provided here instruments-device-grayed-out. But nothing worked work apparently.

Could anybody suggest how do i get this working.

Specification: Xcode - 10.2 iOS - 12.2

Here is the screenshot.

Answer 1

The following worked for me (some steps may be unnecessary):

1. Quit Xcode
2. Unplug iPhone
3. Restart iPhone
4. Start Xcode
5. Plug in iPhone
6. Profile

Answer 2

In my case it turned out that my iPhone is not trusted my computer.

See my answer in this question: https://stackoverflow.com/a/60732605/3051096