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Old Android Phone vs. Cheap Tablet for a Home Assistant Dashboard

Reuse an old Android phone if it runs your Home Assistant dashboard smoothly and is comfortable to use. Choose a tablet when the phone’s screen or performance falls short.
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Reuse an old Android phone if it can load your Home Assistant dashboard smoothly and its screen is comfortable to read and tap from where you plan to use it. Choose a cheap tablet if you need more screen space or the phone fails either check. Home Assistant supports mobile-first dashboards and offers Android Companion app settings for launching Home Assistant and keeping the screen on—but it does not certify every older phone or budget tablet.

How to choose between a phone and a tablet

There is no universal winner: the right device is the one that works with your actual dashboard in its intended location. Check these factors before buying a tablet or mounting a phone.

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  • Screen comfort: Can you read the text and tap controls easily from the normal viewing position? A tablet can provide a larger display, but judge the specific screen and dashboard layout rather than assuming every tablet will be an improvement.
  • Browser and WebView support: Can the candidate load the current Home Assistant frontend in its browser or Android WebView? Home Assistant’s frontend documentation describes browser compatibility builds, but that page was last updated May 27, 2020; it is context, not a guarantee for a particular device. Check the candidate’s software directly in Home Assistant’s frontend documentation.
  • Responsiveness: Try the dashboard with the cards and camera views you intend to use. Home Assistant notes that processor performance and limited memory can matter on budget Android phones, even when a device runs modern technology. The documentation does not establish how any specific phone or tablet will perform.
  • Fixed panel or personal device: A phone may be a sensible reuse choice for occasional checks or a device you still carry around. A tablet may better suit a shared, fixed panel if the larger display makes the controls more usable.
  • Mounting and power: For a permanent setup, verify that a mount fits the exact device and orientation, and plan a suitable cable and charging arrangement. Check the device’s battery condition and charging specifications before leaving it powered in a fixed location.

Make the Android Companion app work like a dashboard

A separate kiosk browser is not required for a basic dedicated Home Assistant display. The Android Companion app can be selected as the device’s home app, set to open after restart, and configured to keep the screen on. Home Assistant documents the setup in Android Home App (launcher).

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  1. In the Home Assistant Companion app, enable its home-app launcher option in the app settings.
  2. When Android offers a home-app chooser, select Home Assistant as the default home app.
  3. To stop the display from turning off, enable Keep screen on in Companion app settings.

With the launcher selected, the device opens Home Assistant after a restart, and pressing Home returns to Home Assistant. The app drawer is no longer available in the usual way, so consider whether you want this device restricted to a dashboard before enabling the launcher.

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Give a fixed dashboard its own default

For a wall-mounted or shared panel, create a dashboard containing only the controls that device needs, then set that dashboard as the default for its Home Assistant user. Home Assistant recommends a separate user for each kiosk when devices need different default dashboards. Its multiple dashboards documentation explains that defaults are associated with user profiles, helping prevent one device’s choice from overriding another’s.

When to consider Fully Kiosk Browser

Fully Kiosk Browser is an optional Android kiosk-browser route, not a prerequisite for displaying Home Assistant. Its integration documentation lists controls and sensors for items such as device status, battery, RAM, storage, screen and brightness, plus motion detection, screensaver and kiosk controls.

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Remote administration requires enabling Fully Remote Admin, which Home Assistant says requires the paid Fully Plus license. The free trial displays a watermark. Consider this path when you need its kiosk-specific controls; for a straightforward dashboard, the Companion app’s launcher and screen-on settings may be enough.

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Test before you commit to a permanent installation

  1. Open the dashboard you intend to use on the exact phone or tablet candidate.
  2. Check that the browser or WebView loads it, then try the real cards, camera views and controls for legibility and responsiveness.
  3. View it from the intended mounting position and confirm the screen is comfortable to use there.
  4. For a fixed panel, confirm the mount, orientation, battery condition and charging arrangement for that specific device.
  5. If the Companion app’s home-app behavior and screen-on setting meet your needs, try those before adding a separate kiosk browser.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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