Updated August 29, 2017

Rotating the iPhone

Rotate the iPhone 90-degrees to put it in landscape mode. Provide the app you are using supports this mode, the keyboard should appear larger.

Using Zoom

Tap the “Settings” icon on your iPhone’s home screen and select “General.” Tap “Accessibility” to open your accessibility screen. Tap the slider labeled “Zoom” and slide it from “Off” to “On.” When using the keyboard (or any other feature), zoom in by double-tapping the screen with three fingers. Zoom back out by double-tapping again with three fingers. Writer Bio

How to Make the Keyboard Buttons Bigger on an iPhone - 90