The Bluetooth pairing fails with the BRAVIA Theatre Quad, BRAVIA Theatre Bar 9, or BRAVIA Theatre Bar 8

If the Bluetooth pairing fails, check the following:
Hint: For information on how to pair with a Bluetooth device, refer to the product Help Guide.

• Make sure that the audio device and the source device are not connected via Low Energy (LE) mode. If connected via LE mode, the Bluetooth connection may fail or the sound may not be heard from the audio device. On the connected devices, in the Bluetooth settings, make sure LE_ is not displayed. If not, pair and connect the devices without LE_.
• Bring the audio device and the Bluetooth device closer together and try pairing again.
• The number of connected devices may have exceeded the device's Bluetooth connection limit. In the Bluetooth settings, delete one or more of the paired devices.
  Note: There are no Bluetooth connection limits with Android OS devices.
• Move the audio system away from any device that generates electromagnetic waves, such as a wireless LAN device or a microwave oven, and try pairing again.
• For a mobile device try the following:
  • Set Airplane mode to ON, wait for a few minutes, and turn it to OFF.
  • Make sure that another device is not currently connected to the mobile device via Bluetooth. If another device is connected, disconnect that device and try pairing again. Turning off the device or turning off the device's Bluetooth feature will disconnect the Bluetooth connection.
• For an audio device, if the Wireless function is set to OFF, a Bluetooth device cannot be paired or connected. Turn the Wireless function to ON and try the operation again.