Dell XCD35 Smartphone - Manual (Page 78)

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Each time you launch Maps application, your location will
be determined using GPS and your Latitude status will be
updated. You can tap Menu Key > Latitude in Maps or
Home Key > > Latitude to see your status as well as
that of your selected friends.
In Latitude, tap Menu Key to refresh friends status, see
them on Maps, add new friends, or change privacy settings.
You can also turn off Latitude service by tapping Turn off
Latitude in Privacy settings.