When the top of the screen is out of reach
Turning on one-handed mode shrinks the whole display so everything falls within comfortable reach of your thumb.
Availability varies by phone
Whether one-handed mode exists at all, and how you trigger it, depends on the manufacturer and model. Some brands ship their own dedicated one-handed mode, while others rely only on general system gestures instead β searching directly in Settings is the most reliable way to check.
Frequently Asked Questions
Is it supported on every Android phone?
Support and how you trigger it vary by manufacturer and model, so it is best to check directly in Settings.
Can the shrunk screen size be adjusted?
On some devices, you can drag to resize the shrunken screen.