8
GPS reception
The iPod touch, the iPad (WiFi only models), and the original iPhone do not include a GPS receiv-
er. To use these devices for navigation, you need to connect them to a GPS accessory device.
Note
: Using a GPS accessory device can also improve the accuracy of GPS in other iPhone
models.
When you first start the TomTom app, it may need a few minutes to find your GPS position and
show your current location on the map.
To make sure you have good GPS reception, you should use your device outdoors. Large objects
such as tall buildings can sometimes interfere with reception.
Important
: The TomTom app cannot give you route instructions until it has GPS reception. Make
sure
Location Services
are switched on.
If your device has no GPS reception, the TomTom app uses positioning information from WiFi
networks or mobile phone towers. This information is used for route planning and to determine
your approximate location.
Location Services
Location Services on your iOS device allow the TomTom app to use cellular, Wi-Fi and Global
Positioning System (GPS) networks to determine your location. If Location Services are turned off,
the TomTom app will not be able to determine your location or guide you to your destination.
If Locations Services are turned off you see the message
Turn On Location Services to Allow
TomTom app To Determine Your Location
.
To turn Location Services on, do the following:
1.
Tap
Settings
in the Locations Services message to open the Apple Location Services screen.
2.
Tap
Location Services
to switch it
ON
.
3.
A list of apps which use Location Services is shown. Tap
TomTom app
to turn it
ON
so it can
use Location Services.
