Location Based Services

Modern mobile phones store geographic information, GPS coordinates, wifi networks, mobile cells.

IOS

• Stores wifi networks:
  • BSSID, Location, Accuracy, Timestamp, ...
• Stores mobile geo information:
  • your providers cell towers, Cell Numer, Location, ...
• Database without size limit
• Sends data how?
• Correlates with GPS
• Data used ..?

Android

• Stores
• Database is limited to 200 Wi-Fi and 50 cell entries
• Sends data how?
• Explicit GPS activation
• Data used by ads?
• Phone setup routine influences what gets stored