How To sysdiagnose on iOS:
- Hold volume up + volume down + power for 250 milliseconds.
- Wait (up to 5 minutes)
- Settings.app > Privacy > Analytics > Analytics Data
- Select the "sysdiagnose_" file and share via AirDrop to a Mac.
How To sysdiagnose on iOS:
See also: https://www.jessesquires.com/blog/2018/02/08/how-to-sysdiagnose-ios/