Sources of location information on Android phones

We investigated several well-known apps from the Android market with respect to the amount of location data stored. Some of these apps, their corresponding databases as well as the location data retrieved can be found in the following table.

App Storage Location Content
system cache.cell last 50 mobile telecommunication cells
system cache.wifi last 200 wifi routers
camera JPG pictures latitude and longitude of picture location
browser CachedGeopositions.db latitude, longitude, accuracy and timestamp
twitter author_id.db -> statuses latitude and longitude of status message
twitter author_id.db -> search_queries latitude, longitude and radius of location search queries
facebook fb.db -> user_statuses latitude and longitude of status message
facebook fb.db -> user_values latitude, longitude and timestamp of last checkin
google maps da_destination_history latitude and longitude of navigation start and destination

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