Having problems reading the text under an icon on your iPhone? Using an application that won't allow you to zoom in on some details? Left the reading glasses at home?
There's a simple solution built right into your iPhone. Simply follow these instructions to switch on additional gestures that will allow you to zoom in on any screen.
First turn on zoom:
1. Go to Settings -> General -> Accessibility -> Zoom
2. Zoom -> ON
1. Double-tap with three fingers to zoom.
2. Drag three fingers while zoomed to move around the screen.
3. Double-tap and drag three fingers up or down to change the zoom level.