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What you hear What does this mean
about your headset
During a conversation 2
tones every 5 seconds
Microphone is muted
Short tone every 20
seconds
Low battery
Troubleshooting
I hear crackling noises
Bluetooth is a radio technology, which means it is
sensitive to objects between the headset and the
connected device. It is designed for the headset and the
connected device to be used within 10 meters (33 feet) of
each other, with no major objects in the way (walls, etc.).
I cannot hear anything in the headset
Increase the volume in the headset.
Ensure that the headset is paired to a device that is
playing.
Make sure your phone is connected to the headset by
checking the phone’s menu or by pressing the MFB.
I have pairing problems
You may have deleted the pairing connection in your
mobile phone. Follow the pairing instructions in page 9.
I have problems streaming in stereo from another device
(PC, MP3-player etc.)
Make sure the other device supports Bluetooth 1.1 or 1.2
and that the Advanced Audio Distribution Profile (A2DP)
is active, or it will not work. Please consult the other
device’s manual for how to pair to a headset.
I can hear stereo but the music control buttons do not work
The connected device must support the Bluetooth profile
for remote control, AVRCP, to make the music control
buttons work. Try to re-connect.
I cannot use reject call, redial or voice dialing
These features are dependent on the ability of your
phone to support a hands-free profile. Please consult
your phone’s manual for details.
Will it be possible to listen to radio on my phone with
the HB420?
Being able to listen to radio via Bluetooth depends on your
phone. Most of the mobile phones currently on the market
require a corded headset that uses the cord as an antenna.
Taking Care of Your Headset
Always store the Hisense HB420S with the power off •
and safely protected.
Avoid storage at extreme temperatures (above
•
45°C/113°F – including direct sunlight – or below
-10°C/14°F). This can shorten battery life and may