What is the small lock symbol on my chart for?
A. The lock symbol on your map screen prevents your iPhone from going into sleep or stand by mode so it always stays on. This is especially useful when you are recording your Track since Track recording is stopped if your iPhone enters sleep mode. Q.>How can I prevent my iPhone from going into sleep mode and turning off my Track recording. A. You can prevent the iPhone from going into sleep or stand by mode by clicking on the LOCK symbol on the bottom left corner of the map screen.