Bose QuietComfort Earbuds II Noise-Canceling True Wireless In-Ear Headphones (Triple Black) - Manual (Page 47)

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TROUBLESHOOTING
SYMPTOM SOLUTION
Charging case
doesn’t charge
Make sure the USB cable is correctly aligned with the port on
the charging case.
Secure both ends of the USB cable.
Try another USB cable.
Make sure the charging case is closed. To help preserve the
battery life, the case should be closed while it’s charging.
Try another wall charger.
If the charging case has been exposed to high or low
temperatures, let the case return to room temperature.
Charge again (see page 32).
Make sure your wireless charging pad is Qi-compatible.
Eartips falling off Securely attach the eartips to the earbuds (see page 20).
Voice prompt language
isn’t correct
Change the voice prompt language using the Bose Music
app (see page 15). You can access this option from the
Settings menu.
Not receiving
call notifications
Make sure voice prompts are enabled using the Bose Music
app (see page 15). You can access this option from the
Settings menu.
Earbuds making
chirping sound
Make sure the earbud nozzles aren’t blocked
(see page 20).