Hi.
The inventory is on top of your display. It opens when you move the cursor up there. Maybe you need to use the navigation wheel of your mobile (i did so, because i can´t reach the top with my finger)

@Bluppfisk Hi, i also had the flashesin monkey island 3. But when i press the home button while the game is running and return to the game over the task manager (pressing the home button a few seconds and tap on the Scummvm "S"), the flashes are gone. (the following question answer with NO...