Telenav for T-Mobile Supported Devices: v6.0 for BlackBerry smartphones - Manual (Page 57)

Backlighting can be controlled from Menu >> Settings >> Navigation >> Backlight (choose On, Off, or On at Turns).
The longer your backlight remains on, the faster battery life will be consumed.
Why don’t I hear audio navigation prompts when I am using a Bluetooth headset?
If you are using a Bluetooth headset, be sure to press the Speaker key on the device while in navigation
mode so that you will be able to hear the audio prompts. A Bluetooth symbol will be shown in the upper-left corner
of the screen if you have redirected the audio through a Bluetooth headset.
How accurate is the GPS?
GPS accuracy can range from 20m (approx. 65 ft) to 100m (approx. 328 ft). Most of the time, the GPS is accurate
to less than 50 meters (approx. 164 ft).
What is the ideal GPS environment?
The GPS requires an open, clear view of the sky. Buildings, covered parking areas, tunnels, and dense foliage can
cause the GPS receiver to be unable to locate a GPS satellite or may cause extended initialization time (time to first
GPS fix).
If you are parked in a covered parking lot or near a tall building, it is recommended that you move into an open area
and then begin to use the TeleNav GPS Navigator service.
Why does the GPS not work near buildings and other tall objects?
The GPS uses signals from satellites so it needs a clear view of the sky. Tall buildings and other objects that block
the GPS receiver’s view to the sky may make it impossible to determine your location. Sometimes the satellites are
not overhead but near the horizon; in these cases, the GPS receiver in your device must have a clear view of the
horizon.
How do I know that the GPS has a signal?
The TeleNav GPS Navigator application on your device alerts you if you do not have a valid GPS signal. If this
happens, move to an area where there is a clear view of the sky so the receiver can hear the GPS signals from
space.
What happens if I’m using TeleNav GPS Navigator for driving directions and I lose the GPS signal while
driving across a bridge or through a tunnel or lose the GPS signal for some other reason?
TeleNav GPS Navigator remembers the speed at which you were driving before losing the GPS signal. TeleNav
GPS Navigator continues to give you driving directions based on an estimate of the projected distance that you
may have traveled at your last recorded rate of speed. TeleNav GPS Navigator recalculates your current position
when you regain a GPS signal and adjusts your driving directions accordingly.
I noticed there are stars next to some restaurants I have viewed or saved. How is popularity rated?
Popularity is calculated by the user-generated ratings, averaged by considering the scores of the ratings and the
number of users that have rated the location. A location accrues points based on how many stars it is given by
TeleNav GPS Navigator users. When a location consistently achieves above-average ratings, its popularity count
increases. Negative ratings lower the popularity count of the location.
How long are ratings kept?
Ratings and reviews expire after two years.
© TELENAV, INC. 2003-2010 PAGE 57 OF 58