How to change brightness and automatic brightness on a Xiaomi phone (HyperOS 3)

Device

Android

Shown on

Xiaomi Redmi Note 15 Pro 5G (25080RABDG), HyperOS 3.0.308.0, Android 16

App

Settings

Real screenshots

3 of 3 steps

Checked

October 2026

Sources

3 official, linked below

Step by step

1. 

   Open Display & brightness

   Open Settings and tap Display & brightness. Brightness level is below Light mode, Dark mode and Dark mode options.

   Done

2. 

   Drag Screen brightness

   Screen brightness is a wide bar. Drag it right for a brighter screen, left for a dimmer one. Ours was set low, near the left.

   Done

3. 

   Automatic brightness

   Turn Automatic brightness on to let the phone set the brightness, or off to keep it where you put it. It was on on ours.

   Done

If you do not see this option

• Called Auto brightness? Xiaomi's REDMI 13C 5G steps say Display & brightness, Auto brightness, and add a second way: swipe down from the top right to open Control centre and tap the Auto brightness icon. Ours was named Automatic brightness. Source: How to adjust the brightness on the Redmi 13C 5G automatically?
• Screen doesn't follow the light? Not every model does. Xiaomi says the REDMI A3's screen doesn't adapt to the light around it, so you set the brightness by hand. Source: Does the brightness of the REDMI A3 screen adapt to the environment?

If this does not work

• Hard to see outdoors? For the REDMI Note 13 Pro+ 5G, Xiaomi suggests raising the brightness by hand, or turning off Automatic brightness and setting a level yourself. Source: Why is the REDMI Note 13 Pro+ 5G brightness low and difficult to see, especially in outdoor situations?
• Brightness keeps changing? That is Automatic brightness. Turn it off on this page. Xiaomi says you can also tap Auto brightness in Control centre to turn it off. Source: Why is the REDMI Note 13 Pro+ 5G brightness low and difficult to see, especially in outdoor situations?
• Battery runs down fast? A bright screen uses more power. See how to change battery mode and see battery use.

About this guide

Brightness has a slider and an automatic mode, both on the Display & brightness page.

The screenshots are from our Redmi Note 15 Pro 5G with Xiaomi HyperOS 3.0.308.0 and Android 16, in Light mode. Automatic brightness was on. We only opened these screens and changed nothing.

Good to know

Add the brightness controls you use to Control centre.

The torch has its own brightness: how to change the torch brightness.

In short: Settings, Display & brightness: Screen brightness bar, Automatic brightness switch.