3. Why can't BTR15 be paired and connected to my phone? How to reset?

【Clear the pairing information on your phone】

Go to Settings-Bluetooth to delete the BTR15 pairing information and reconnect it to BTR15.

【Clear the pairing information on BTR15】

When it is on, hold both the volume- and volume+ buttons at the same time for about 5s.

【Reset operation】

Hold the Power button for at least 10 seconds to reset it.