TCF Logo

When you dial 111 from a mobile phone, data that helps determine the location of your handset may be sent to a Location Area Service (LAS) system overseen by the Ministry of Business, Innovation and Employment. This data is provided by your mobile network operator (for all handset types) or by your handset (if you have an Android handset).

Location services are switched on only when 111 calls are made, and then returned to the caller’s original settings after the call has terminated. All location data will only be held for 60 minutes and will then be deleted.

The caller location system enables police, fire and ambulance services to respond more quickly to emergency events from mobile phones, using the system data to help them verify the location of 111 calls from mobile phones.

Click here to see an infographic about how the emergency caller location information system works.

Looking for something else?

Security Tips

Find out how to keep your data secure when using mobile services

Find out more

Last Modified On Wednesday, 31 January 2018