There are several files that contain valuable information for debugging iOS application problems:
- The Mac's system log, which can be accessed in the Console app (Applications -> Utilities -> Console), view “All messages” at the upper left.
- The simulator log, which can be accessed from the simulator’s Debug -> Open System Log.
- If there is a crash in the simulator, a crash report is written in ~/Library/Logs/DiagnosticReports.
- For devices, logs can be accessed from Xamarin Studio (via View -> Pads -> iOS Device Log. For crash reports, the Devices tool in XCode (Window -> Devices).