BlueAnt Bluesonic Bluetooth Portable Speakers - Manual (Page 29)

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Handsfree Profile allows for extra features to be used with a mobile
phone. Voice Dial, redial, call transfer are some that are included in
Handsfree but not Headset. Handsfree also allows for a slightly better
call quality.
4. How do I know if my devices are connected?
When Bluetooth is turned ON in your phone you may see a Bluetooth
symbol appear on your main screen that changes slightly (colors invert or
arrows appear) when connected to the BlueSonic. Some phones show a
Headset or Car symbol to notify you that the devices are connected.
5. How far can my mobile be from the BlueSonic and still remain
connected?
The BlueSonic will remain connected within a range of 10 meters (30
ft). Sound quality may start to deteriorate after approximately 7 meters
depending on your environment.
6. Can other electrical devices cause interference with Bluetooth?
Bluetooth technology employs a technique called frequency hopping
to constantly change the frequency at which it sends data, reducing
interference with wireless devices such as wireless LAN’s and cordless
landline phones for example. Noise Interference can occur if the
Bluetooth device is used in close proximity with a microwave. Check
if there are any such devices in the surroundings, and if so keep the
distance between the BlueSonic and such devices to at least 5 - 10m.
Usually any interference will only cause a slight crackling sound. The
frequency of Bluetooth is much higher than that of radio station bands.
7. If I cup my hand over a Bluetooth device the signal strength and
quality suffers. Why does this happen?
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