3. What should I do if the BTR11 does not work normally?

【Clear the pairing information on your phone】

Go to Settings-Bluetooth to delete the BTR11 pairing information and reconnect it to BTR11.

【Clear the pairing information on BTR11】

When it is on, hold both the volume- and volume+ buttons at the same time for about 5s. The BTR11 will turn off. It will enter pairing mode automatically after powering on.

【Could not be turned on】

Use the adapter with small current or the USB port in the computer to charge the BTR11 for 1-2 hours. Then turn on the BTR11 again.