The P-A-F switch needs to remain in the F position to access and operate the IN modes. Switching to ATTI or P-GPS will cancel the current IN mode. If you select F and don't select an IN mode, you get F-GPS which is P-GPS with a selection dialog filling the app screen. The simulator has all the IN functions and is accessed by tapping the question mark (?) at the top right of the GO app home screen.
Thanks Mark I kept hitting that little thing on the left of the APP! It is a shame they don't have a simulator android. (I use a mini2 for my I1)
thank you again.