Change iOS’s appearance

Text size

Go to Settings > Display & Brightness and tap Text Size to bring up a slider that enables you to adjust the default size of text in iOS. The change will be visible in all apps that tie into iOS’s Dynamic Type feature, which all the best should. But there’s more! Go to Settings > General > Accessibility > Larger Text and there’s a switch that enables even bigger sizes.

Reduce animations

Also in Settings > General > Accessibility is an option named Reduce Motion. Tap it you’ll see a switch labeled the same thing. Turn this on to disable effects such as the way app icons gently move as you tilt your phone, and the animation of apps shrinking and growing when you open or close them. This can save power, and some people find it more pleasant to use.

Bold text

In Settings > Display & Brightness, just below the Text Size option is a switch that enables Bold Text. If you activate (or deactivate) this, your device will need to restart. It does exactly what you expect, turning text in iOS to bold. Again, apps will have to tie into iOS’s built-in text engine for you to see the benefits, but most should.

Button outlines

When the look of iOS went flat and simple in iOS 7, many buttons lost their obvious shapes, making it occasionally confusing about what you can tap. Go to Settings > General > Accessibility and turn Button Shapes on, and you’ll see that many buttons now get dark gray shapes around them, showing you that they’re tappable. The “General” button at the top of the screen should already have changed!