Do you ever find that small print like serial numbers, instructions or any other smaller print on items is hard to read? iOS 10 can turn your iPhone or iPad into a magnifying glass! You’ll first want to go into Settings > General > Accessibility > Magnifier and turn on Magnifier.
Press the Home Button three times quickly to bring up the Magnifier and then point the camera at what you want to see. The view is zoomed automatically, but you can change the zoom level with the slider, tap the flash icon to turn on the LED light ( if one if available on your device ), enable a filter to change the color or contrast, or lock the focus by tapping the lock icon. You can also freeze the image by tapping the big round Take Photo button. This is great for grabbing a picture of a tiny serial number!