Have you ever been trying to read something or just to get a closer look at something? I often find looking at serial numbers on devices difficult, some of my friends struggle with menus in a restaurant, I guess this could be an age thing.
Thankfully in iOS 10 there is a built in magnifier that is easy to access, I have actually found that I have been using this more than I thought I would.
Now I could just take a photo and zoom in but I have found this very useful. Here is how it works.