Why isn’t my heart sensor connecting?

When the Mightier app can’t read a player’s heart rate, you’ll see an onscreen message that it’s trying to connect to the heart sensor. This can happen at the beginning of a play session or anytime during play.




Common causes for connection issues are low battery levels and how the heart sensor is worn.

  1. Try charging the sensor for one hour.
  2. Double-check that the heart sensor is worn snugly on the non-dominant forearm or bicep, away from the wrist and elbow. Watch this short video with tips for wearing and adjusting the heart sensor:



If your heart sensor is still having trouble connecting, please try each of the following (one at a time):

  1. Turn off the heart sensor by holding the Power button down for about 5 seconds. Then turn it back on.
  2. If that doesn’t work, turn the heart sensor off and turn off the tablet by holding the Power button. Fully reboot the tablet, log into the Mightier app, then turn your heart sensor back on when prompted.


If the basic troubleshooting steps above do not help, please check each of the following.

1. Reset the Bluetooth connection. 

If you're using a tablet you received from us: 

  1. Swipe down from the top edge of the screen and tap the Bluetooth symbol (the angular letter B).
  2. Hold down the Power button for 15 seconds to fully reboot the device.
  3. Once the tablet turns back on, swipe down from the top edge of the screen and tap the Bluetooth symbol again; make sure it's lit.


2. Double-check that Location Services is On.

To turn on Location Services on the tablet without Google Family Link installed:

Swipe up from the bottom of the screen and tap the circle (Home button) to minimize the Mightier app. Then, tap the Settings gear on the Android Home Screen (desktop).

  1. Tap Location or Security & Location.
  2. Tap Location and turn it On.


If you’ve downloaded Google Family Link, Location Services may be blocked in Family Link. To unblock it:

  1. Open the Family Link app on your phone (the parental device).
  2. Select the child from the menu in the upper left corner.
  3. Tap Account Settings.
  4. Tap Location Settings.
  5. Tap on your child’s device, and make sure Allow Location Access is turned On.


You may also need to set Location permissions On for the Mightier app specifically:

  1. Tap Settings, then Apps & notifications.
  2. Tap See all [number] apps or App info, whichever appears.
  3. Find Mightier in the alphabetical list of apps and tap it.
  4. Under Permissions, make sure the Location is set to Allow or Allow only while in use.


3. Try clearing the Mightier app cache:

  1. First, make sure your Mightier play data is synced, because all play data stored locally will be deleted. To do this, make sure you're connected to Wi-Fi, then open the Mightier app and tap the Log out button (the door with an "exit" symbol in the upper left corner). This will automatically sync your play data to our servers, although it may take a few minutes.
  2. Tap the Settings gear on the Android Home Screen.
  3. Tap Apps & notifications.
  4. Tap App info or See all [number] apps, whichever one appears.
  5. Find Mightier in the alphabetical list and tap it.
  6. Tap Force Stop to make sure the Mightier app is closed, then tap Storage.
  7. Tap Clear cache.


If you've gone through these steps and are still facing issues, reach out to the Family Care Team. Our experts will be happy to help.


Was this article helpful?
2 out of 14 found this helpful
Our Family Care Team hours:
9:00am - 6:00pm EST Monday to Friday