How to change what the power button does on a Xiaomi phone (HyperOS 3)

howtosimply.com/guides/how-to-change-what-the-power-button-does-on-a-xiaomi-phone/ · Checked October 2026 · Xiaomi Redmi Note 15 Pro 5G (25080RABDG), HyperOS 3.0.308.0, Android 16

3 of 3 steps with real screenshots · 1 official source below

Device

Android

Shown on

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

App

Settings

Path

Settings › System › Gestures

Real screenshots

3 of 3 steps

Checked

October 2026

Sources

1 official, linked below

Step by step

1. 

   Search Settings for power button

   Open Settings and type power button. Ours listed Press and hold power button with its route, System > Gestures. Tap it, or go to Settings, System, Gestures yourself.

   Done

2. 

   Tap Press and hold power button

   The Gestures page lists Navigation mode, One-handed mode and Press and hold power button. Ours said Access power menu under it.

   Done

3. 

   Choose Power menu or Digital assistant

   Under Press and hold the power button to access, tap Power menu to get Power off and Restart, or Digital assistant to start the assistant. Ours had Power menu ticked.

   Done

If you do not see this option

• Assistant setting under Accessibility instead? Ours also lists Launch digital assistant, Press and hold the Power button for 0.5s, under Settings, Accessibility, Gesture shortcuts. It was On there. If your phone has no System, Gestures page, look there.

  

• Holding Power opens Gemini anyway? On 24 October, holding Power on ours opened Gemini even though this page said Power menu, while Launch digital assistant was On under Accessibility, Gesture shortcuts. The same page lists Power off as pressing Power and Volume up together; we didn't try it.

  

• No Gemini on your model? Xiaomi's HyperOS 3 guide says pressing and holding Power brings up the Google assistant, with a note that Google Gemini may not be available on all models. Choose Power menu if you don't use an assistant. Source: Generic User Guide for HyperOS 3.0
• Other power button settings? The same search found Double-press power button to open and Press and hold duration, both under System, Gestures, and Power button ends call under Accessibility.

  

If this does not work

• Holding Power opens the assistant, not the menu? Set Press and hold power button to Power menu (step 3), then check Launch digital assistant under Accessibility, Gesture shortcuts too.
• Can't find either setting? Search Settings for power button; ours listed every power button setting with its route.
• Need to switch the phone off right now? See how to turn off or restart a Xiaomi phone.

About this guide

Holding the power button can open the power menu or the digital assistant (Gemini on many phones). If yours opens the wrong one, this is the setting.

The screenshots are from our Redmi Note 15 Pro 5G with Xiaomi HyperOS 3 and Android 16, in Light mode, taken on 23 October 2026. We only opened these screens and changed nothing.

Good to know

Turn off or restart: how to turn off or restart a Xiaomi phone.

In short: Settings, System, Gestures, Press and hold power button: Power menu or Digital assistant.