It may happen that you encounter issues using the 4D for iOS project editor or using your iOS app
You can access logs by clicking on "Project" in project editor with Alt key.
From here, a menu will appear for the curent simulator :
Open the simulator logs Where you can find the CrashReporter MobileInstallation folder
Open the Simulator Dianostic Reports
Open Current simulator Folder
Open Application Simulator Folder This will open a submenu for each application