Telenav for T-Mobile Supported Devices: v5.76 for J2ME devices - Manual (Page 69)

18. FAQs
Why do I need the carrier’s data service?
The data plan allows you to access nationwide routes, maps, and Directory content from the TeleNav GPS Navigator
servers using the data communication features of your device. These services are different from your cellular airtime. To
order a data plan from your wireless carrier, please contact their customer support directly.
How long after I apply for the data service until I can use my TeleNav GPS Navigator application?
Generally, it takes until the following business morning before the data services are fully provisioned. If you already have
data services, it should be no more than 4 hours before an added TeleNav GPS Navigator plan is active.
Does TeleNav GPS Navigator use up my voice plan minutes?
TeleNav GPS Navigator uses data to provide its navigation functions. Using data does not use any of your voice
minutes. However, placing calls to businesses you found through the Search feature uses voice minutes.
How do I increase or decrease the voice prompt volume?
Speaker volume can be controlled with the volume buttons on the side of the device.
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 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.
©2011 TELENAV, INC. PAGE 69 OF 71