Only one earphone sounds

Your earphones may not have paired correctly, which is why only one is sounding. To fix this, follow these steps:

Important: Make sure the colored strips covering the charging contacts of each earphone are removed and that they have been charging for a while.

1. On your phone: remove the previous pairings from Settings - Bluetooth - (delete, forget...)
2. On your phone: turn off Bluetooth.
3. Leave the earphones in the case and hold down the base button for 3 seconds. The light will start to flash red and white and then go off. This means the reset has worked.

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Now they can be paired with the phone. Take the earphones out of the case.

4. On your phone: turn on Bluetooth.

5. Go to Settings - Bluetooth, find the earphones, and tap to connect.