Back / close screen on iPhone Agentry Inventory for Maximo app

Hi,

I have installed the "out of the box" Inventory for Maximo 8.1 (and 8.0) application and on the iPhone (5) I cannot for the life of me work out how the user is to return to the main menu.  If I go into quick search or any of the other main items off the menu I cannot find a way to go back (so I can change from say quick search to Issues or POs).  On the Android I use the back button that the phone has.

Now I can add a close screen button to the action menu, but surely I must be missing something and out the of box the user can go back to the main menu without having to exit the app, clear it from running and then log back in.

Thanks,

Cameron