How to change the font size and display size on a OnePlus (OxygenOS 16)

Device

Android

Shown on

OnePlus Nord 5 (CPH2709), OxygenOS 16.0.5.1201, Android 16

App

Settings

Path

Settings › Display & brightness › Font

Real screenshots

6 of 6 steps

Checked

October 2026

Sources

1 official, linked below

Step by step

1. 

   Open Font

   Open Settings, tap Display & brightness and scroll to Font. Tap it.

   Done

2. 

   See the Font size slider

   A sample text sits at the top. Below are the fonts (One Sans, One Serif, Roboto, OnePlus Sans), then Font size: Default on ours.

   Done

3. 

   Drag the slider

   We moved it one step right. The label changed to Medium and the sample text grew.

   Done

4. 

   Tap Apply

   The change only takes effect after Apply, at the bottom.

   Done

5. 

   Check the new size

   Settings now showed bigger text. We set Default back afterwards.

   Done

6. 

   Or change Display size

   Back on Display & brightness, tap Display size. Choose Large, Standard or Small. The page notes it changes content, icons and text.

   Done

If you do not see this option

• Bold text? Font weight is the slider under Font size, with a Reset link.
• Older OxygenOS? OnePlus's OxygenOS 14 manual puts Font size under Settings, Wallpapers & style, Font. On our OxygenOS 16 phone it is Display & brightness, Font. Source: OxygenOS 14.0 User Manual

If this does not work

• Text did not change? Tap Apply. Moving the slider alone only changes the sample.
• Some apps too large now? Go back one step, or use Display size instead.

About this guide

OnePlus has two separate settings: Font, for text only, and Display size, for everything on the screen.

The screenshots are from our OnePlus Nord 5 with OxygenOS 16.0.5.1201 and Android 16, in Dark mode. Font size was Default and Display size Standard. We made the text one step bigger, looked at Settings, then set Default back.

Good to know

Easier reading at night: Eye Comfort on a OnePlus.

On a Pixel: text and display size.

In short: Settings, Display & brightness, Font, Font size slider, Apply. Display size for everything.