To display the full screen graph, rotate your iPhone or iPod touch to landscape orientation. This graph will displayed from either the Statistics, Fuel, Expense, Road Trips, or Info page.
To dismiss the full-screen graph, simply rotate your device back to portrait orientation.
iPad Users: If you're using the iPhone version of Road Trip on your iPad, you must ensure that your iPad is not locked in landscape orientation as that will prevent you from using Road Trip.
Note that Road Trip HD is designed specifically for the iPad and can be used in both landscape and portrait orientations.