1. Make sure the display on the band is ON when attempting to bind with App.
2. The band can't be searched and bound when the battery dies. Therefore, you may check whether the band has any power left. If not, you may charge it before you retry the search and binding.
3. Switch off and then turn on the mobile device Bluetooth.
4. Restart the mobile device.
Notes: If the previously bound mobile device is within the Bluetooth range of the band, the mobile device will preferentially establish a connection with the previously bound band.