When police investigate suspected child exploitation or suspected pedophiles, phone data and GPS can be one part of a much larger investigation. Methods vary by country and legal system, but commonly include:

1. Cell tower location data
   • Phones regularly connect to nearby cell towers.
   • Investigators can use those records to estimate where a phone was at a certain time (sometimes called “cell-site location information”).
   • This is usually approximate, not exact.
2. GPS data
   • If a phone app, device setting, or vehicle system recorded GPS, that can provide much more precise location data.
   • Access usually requires legal authority (like a warrant/court order).
3. Cloud account data
   • Services like Apple, Google, or social media platforms may store location history, messages, backups, or photos with metadata.
4. Wi-Fi and Bluetooth records
   • Phones “see” nearby Wi-Fi networks and Bluetooth devices, which can help place someone at a location.
5. App and metadata analysis
   • Messaging apps, search history, browser history, ride-share logs, and map searches can all help build timelines.
6. Geofence warrants(where legal)
   • In some places, police may request anonymized data for all devices in a geographic area during a time window, then narrow it down.
7. Corroboration
   • They usually combine phone data with:
     • CCTV
     • witness statements
     • financial records
     • online account activity
     • seized devices and forensic analysis

Organizations like FBI, Europol, and local police cybercrime units often have dedicated digital forensics teams for this.

Important caveat: laws differ by country—for example, rules in Spain can differ from those in the United Kingdom or United States—especially around warrants, privacy, and data retention.