Modern Android smartphones integrate digital assistants deeply into the operating system. Whether triggered by saying a wake phrase, swiping inward from the bottom screen corners, or holding down the physical power button, your phone automatically launches its designated virtual assistant. By default, Android devices default to Google Assistant or Google Gemini, while Samsung Galaxy devices often integrate Bixby alongside Google services.
However, many smartphone users prefer alternative virtual assistants (such as Amazon Alexa or Microsoft Copilot), or prefer to disable digital voice assistants completely to avoid accidental activations and save battery. Fortunately, Android includes a dedicated “Default apps” management menu that allows you to swap or completely remove the default assistant handler. This tutorial explains how to change your digital assistant app on Android, revoke screen context permissions, or disable assistant invocation gestures entirely.
How to Change the Default Assistant App on Android
On stock Android, Google Pixel, Motorola, and devices running Android 12 through Android 15, you can change your assistant provider via the system settings:
- Open the Settings app on your Android device.
- Scroll down and tap Apps.
- Select Default apps (on some devices, you may need to tap Advanced or look under Special app access).
- Tap on Digital assistant app.
- Tap Default digital assistant app at the very top.
- A list of installed compatible assistant applications will appear (e.g., Google, Gemini, Alexa, None).
- Select your preferred alternative assistant, then tap OK when prompted with the security dialog confirming system integration.
How to Completely Disable the Digital Assistant
If you do not want any assistant to launch when you swipe corners or press hardware keys:
- Navigate back to Settings > Apps > Default apps > Digital assistant app.
- Tap Default digital assistant app.
- Select the option labelled None.
With “None” selected, corner swipes and assistant shortcuts are completely silenced, preventing sudden popups when gaming or typing.
Changing the Assistant on Samsung Galaxy Devices (One UI)
Samsung smartphones provide an identical capability organised slightly differently within One UI:
- Open Settings on your Samsung Galaxy device.
- Tap Apps.
- Tap Choose default apps near the top of the screen.
- Tap Digital assistant app, then select Device assistance app.
- Select between Google, Bixby, Finder, or None.
Disabling Screen Context and Screenshot Analysis
Digital assistant apps have permission to read what is currently on your screen to provide contextual suggestions and summaries. If you prefer to keep your assistant active for voice queries but want to stop it from reading your on-screen text and images:
- Inside the Digital assistant app settings screen, locate the Assistant features section.
- Toggle off Use text from screen.
- Toggle off Use screenshot.
This ensures your assistant only processes data when you explicitly type or speak an active prompt, preserving your on-screen privacy.
Stopping the Power Button from Launching the Assistant
In recent Android versions, pressing and holding the side power button often launches an assistant instead of displaying the traditional restart and power-off options. To restore standard power button behaviour:
- Open Settings > System > Gestures (or Advanced features > Side button on Samsung).
- Tap Press & hold power button.
- Switch the option from Digital assistant back to Power menu.
Configuring your digital assistant preferences ensures your Android smartphone responds only when you intend it to, matching your specific productivity and privacy needs.