Hello! I see you’re having trouble connecting with the Lefun Health app on your Android 10 device. Let’s get that sorted out. To help you best, could you tell me if you’re trying to connect a Lefun smartwatch or another device? Also, are you getting any specific error messages, or does it just fail to connect with no details?

Meanwhile, here’s a general step-by-step guide to try for connection issues with Lefun Health:

1. Ensure Bluetooth is enabled: On your Android device, make sure Bluetooth is turned on since connection relies on it.

2. Close and reopen the app: Sometimes restarting the app clears temporary glitches.

3. Check proximity: Make sure your Lefun device is close to your phone without physical obstructions.

4. Restart devices: Reboot your phone and your Lefun device to refresh connections.

5. Re-pair device: Open the Lefun Health app, go to the top right corner, and select “Add Device.” Follow prompts to pair again.

6. Check for app updates: Go to Google Play Store and confirm Lefun Health app is up to date.

7. Clear app cache: In your Android settings under Apps > Lefun Health > Storage, clear the cache to remove corrupt temporary files.

8. Avoid magnetic/electronic interference: Some places have signals that interfere with Bluetooth3 4.

If you already tried some of these, let me know which ones so I can suggest more specific steps. Also, is your Lefun Health device fully charged?

Looking forward to your reply to help you reconnect smoothly!