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Troubleshooting
·4·
·5·
Issue
Possible Cause
Solution
Earbuds
are not
charging
Earbuds
cannot be
paired with
the mobile
device
Earbuds
come loose
when
wearing or
are
uncomfort-
able to wear
Audio
conversation
could not be
heard during
handsfree
operation
Battery level in
charge case is
low
Earbud charge
points do not
connect with
charge points in
charging case
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●
●
The pairing steps
were missed
Previous
connected devices
have not yet
disconnected from
the earbuds
Battery level is low
in earbuds
●
●
Connect the charging case with
the included USB charging cable
to a USB power source
Take out both earbuds and
reposition them in the charging
case (Red indicator light should
appear on the earbuds when
charging is initiated)
●
Swap the ear plugs and/or hook
to a different size. Package
includes small, medium and
large size ear plugs and ear
hooks.
●
Connect left side earbud to the
mobile phone.
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Turn off both earbuds by pressing
and holding multi-function buttons
on both earbuds and go through
the pairing steps again.
Check the Bluetooth setting on the
previous connected device to
either turn off the Bluetooth
function or remove “QDSLTMC12B”
from the list of device.
Put both earbuds into the
charging case to recharge
(check the battery level in the
charging case and connect to
external USB power source if
necessary).
Audio from
earbuds is
lagging or
one side
dropped out
Charging
case cannot
be
recharged
●
Signal interference
from surrounding
environment such
as cellular signal
tower and WIFI
broadcast antenna
●
Current ear plug
and/or ear hook is
not correct size
for comfort
●
Handsfree earbud
(left side) is not in
use.
●
●
A loose connection
on USB charging
cable in between
charging case and
USB power source
USB power source
is not working
●
●
Leave the premises to reduce
the interference.
Turn off both earbuds and
remove the from the Bluetooth
device list on your mobile
device. Re-initiate the pairing
process.
●
●
Check both connections of the
USB charging cable.
Check status of the USB power
source.
