Magnify the iPhone 5 screen with the Zoom feature. It’s a great Accessibility feature for the vision impaired, or if you’re simply displaying something that is difficult to see at normal magnification
To enable or disable zoom, follow these steps:
1. Open Settings from the Home screen.
2. Choose General.
3. Select Accessibility.
4. Select Zoom and switch it to On or Off.
How do you use the Zoom feature once this is enabled?
Double-tap on the screen with three fingers to enter zoom mode. You can double tap with three fingers while keeping your fingers on the screen after the second tap to control zooming by moving your fingers up and down the screen.
Double-tap with three fingers again to exit zoom mode.