Nope, you don’t have to settle for itty-bitty text on your iPhone screen, nor must you deal with buttons that don’t look anything like buttons. Once you know which settings to change, you can boost the size of on-screen text on your iPhone or iPad, make words a bit more bold, zoom in with a virtual magnifying glass, warm up—or cool off—Night Shift, and more.
1. If you really want, you can make text on your iPhone or iPad look even tinier. Tap Settings > Display & Brightness > Text Size, then drag the slider one way or the other.
2. For even more – Bold Settings. Tap Settings > Display & Brightness, then toggle on the Bold setting. Once your iPhone or iPad restarts, your iOS system text—everything from icon labels on the home screen to the words in plain-text mail messages—will look thicker and darker.
3. Magnifying glass – Tap Settings > General > Accessibility > Zoom, then toggle on the Zoom setting to enabled iOS’s Zoom mode.