What does the lock button do for approach plates?
On the iPhone, when you view an approach plate you will see a lock button on the top bar. When you tap this it prevents the view from auto-rotating or zooming/panning when you tilt your phone. On the iPad it also prevents zooming and panning, but you’d use the physical button on the top-left of the device for locking rotation. Just slide the button to enable locking, and plates will not rotate.
