How to use one-handed mode on a Samsung Galaxy

By Saadat Rafiq · 2 min read · 4 steps · Published 6 October 2026

Device

Android

Shown on

Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

App

Settings

Path

Settings › Advanced features

Real screenshots

3 of 4 steps

Checked

October 2026

Sources

2 official, linked below

Step by step

1. 

   Open Advanced features

   Open Settings and tap Advanced features. One-handed mode has its own switch there.

   Done

2. 

   Switch it on

   Tap One-handed mode to open its page and turn on the switch at the top. Ours is Off.

   Done

3. 

   Choose how to start it

   Under Reduce display size with, Gesture means swiping down in the centre of the bottom edge of the screen. Button means double tapping the Home button. The options can be chosen once the switch is on.

   Done

4. Use it

   Do the gesture or double tap. The screen shrinks; tap the empty area outside it to go back to full size.

   Done

About this guide

On a big phone the top of the screen is out of reach of your thumb. One-handed mode temporarily scales the display down to a corner. We only looked at these screens on our phone and changed nothing.

The screenshots are from a Samsung Galaxy A57 5G with One UI 8.5 and Android 16. Other Galaxy phones on One UI 8 use the same menus; on older One UI versions a few names and positions differ.

Good to know

Gesture fits gesture navigation and Button fits the three navigation buttons. If one does nothing, try the other or check your navigation bar setting.

In short: Settings, Advanced features, One-handed mode on. Gesture: swipe down at the bottom centre. Button: double tap Home.