You can report crash bugs for iOS with Unity Bug Reporting. If your application crashes in the Xcode debugger, it’s recommended to add the Xcode console output to your bug report. Use the following steps to access the console output if your application crashes:
Note: Before submitting a bug report, refer to Troubleshooting on iOS devices where you will find solutions to common crashes and other problems.
thread backtrace all
and press Enter.When reporting any application freezes, you can click Pause and repeat the previous steps.
If your application crashes on the iOS device, it’s recommended to retrieve the crash report. To achieve this, refer to Acquiring Crash and Low Memory Reports (Apple Developer). Attach the crash report, your built application, and the console log to your bug report.