Open the app where the keyboard appears
Tap and hold the keyboard icon or globe icon if available
Select Split Keyboard if your iPhone model and iOS version support it
Use two fingers to drag the keyboard apart
To return it to normal, pinch the split keyboard back together
If Split Keyboard is not available, use one-handed keyboard mode instead
Go to Settings
Tap General
Tap Keyboard
Turn on One-Handed Keyboard
Choose Left or Right
To disable it, set One-Handed Keyboard to Off