When the bracelet can't be connected with the Bluetooth of the mobile phone, please do the following: make sure that the Bluetooth of the mobile phone is turned on; If the Bluetooth of the mobile phone is turned off, turn on the Bluetooth switch, put the bracelet and the mobile phone together, and try Bluetooth connection.
Please connect the bracelet to the mobile phone through the APP, and don't search for the connection from the Bluetooth list of the mobile phone. Please ensure that the application runs in the background, and it is recommended that you add the application to the protected background application.
If you still can't establish a Bluetooth connection through the above method, please close and clear the application from the phone background, and then reopen it, or restart the phone and try to connect again.