Testing connection with a wearable#

The Test Sensor tool gives you quick, real-time visual confirmation that your wearable device is properly connected to your phone and actively sending movement data to Sleep as Android.

The Test Sensor feature is supported for most wearables, but is not supported for Garmin and Fitbit devices due to platform restrictions.

Where to Find It#

To open the test tool in the app: Settings → Sleep tracking → Wearables → Test sensor

How It Works#

When you start the sensor test, Sleep as Android attempts to establish a live connection with your selected wearable. Once connected, it displays a graph showing the movement data being received from your watch or band (with a little delay).

Successful sensor test (wearable)

What to Look For on the Graph#

  • Successful Test - Test sensor: Wearable When your wearable is connected and working correctly, you will see a green graph that spikes whenever you move your watch. (Note: A short delay of a few seconds is completely normal, as data is sent from the watch in small batches).

  • Failed Test - Test sensor: Accelerometer / Sonar If the app cannot establish a connection with your wearable, it automatically falls back to your phone’s built-in sensors after a while. The label on the graph will change to Accelerometer or Sonar depending on your default tracking settings.

Successful vs failed test of wearable connection

❓ FAQs & Troubleshooting#

Why did my sensor test fail or show the phone's accelerometer instead?
  • Reason: Connection failure between your phone and wearable.
  • 👉 Fix:
    1. Check Bluetooth: Ensure Bluetooth is on and your watch is connected.
    2. Verify Companion App: Ensure the required watch app is running.
    3. Check App Settings: Go to Settings ➔ Sleep tracking ➔ Wearables ➔ Wearables and confirm the correct model is selected.
    4. Disable Battery Optimization: Exclude Sleep as Android and companion apps from optimization (visit DontKillMyApp.com).
Is it normal for the movement graph to lag slightly during the test?
  • Reason: Batch data transfer to conserve battery.
  • 👉 Fix: Yes. A delay of a few seconds is normal as wearables send data in periodic batches.
My wearable is connected, but why isn't heart rate showing on the test graph?
  • Reason: The test focuses on movement tracking or HR monitoring is misconfigured.
  • 👉 Fix:
    1. Go to Settings ➔ Sleep tracking ➔ Wearables.
    2. Make sure Heart rate monitoring is toggled on.
    3. Ensure Pulse oximeter (Bluetooth) is disabled.
    4. Verify continuous HR monitoring is enabled in your wearable’s official app.

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