Advanced Mobile Location

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Advanced Mobile Location (or AML) is an emergency location-based service (LBS) available on smartphones that, when a caller dials the local (in country) short dial emergency telephone number, sends the best available geolocation of the caller to a dedicated end-point, usually a Public Safety Answering Point, making the location of the caller available to emergency call takers in real-time. AML improves the time taken by emergency call takers to verify the location of callers and can improve the time taken to dispatch an emergency response.

AML was standardised by the European Telecommunications Standards Institute (ETSI) Emergency Telecommunications Subcommittee (EMTEL)[1] in 2016 as Technical Report (TR) EMTEL-00035.[1]


AML was developed in the United Kingdom by British Telecom, EE Limited, and HTC as a solution to problematic caller location in emergencies.[2] When a person in distress calls the emergency services with a smart-phone where AML is enabled, the telephone automatically activates its location service to establish its position and sends this information to the emergency services via an SMS.[3] The services uses either a global navigation satellite system or WiFi depending on which one is better at the given moment. It was estimated that this technique is up to 4000 times more accurate than the previously used system.[4] AML is being implemented in the UK by an increasing number of smart-phone manufacturers and mobile network operators: BT, the mobile networks EE, O2 and Three, together with Apple inc., HTC, Sony, Alcatel, and Samsung handsets, have already successfully implemented AML.[5]


Google announced in July 2016 that all Android phones from Gingerbread OS version include AML.[6] Google calls their implementation Emergency Location Service (ELS).[7]

Apple devices running iOS 11.3 or later also support AML as of 30 March 2018.[8]

AML is deployed in Austria, Estonia, Lithuania, Belgium, Iceland, Finland, Ireland[9] and New Zealand[10]. Moreover, several countries around Europe are testing AML as a solution to problematic caller location in an emergency with the aim of deploying it by the end of 2018.[11]


AML automatically turns on mobile data on the handset (which may lead to charges to the user), automatically contacts Network Time Protocol (NTP) servers and sets date, and sends IMSI/IMEI over unencrypted (but invisible to the user) SMS message.

AML outcomes[edit]

There are many success stories coming from the use of the technology, such as the one from Lithuania, where a young boy saved his father's life thanks to AML.[12]


  1. ^ "Work Programme - Work Item Detailed Report". Retrieved 2018-04-07.
  2. ^ "UK shows the way towards accurate caller location – An example for others to replicate!". Retrieved 2016-04-25.
  3. ^ "BT, EE and HTC develop 'life-saving' mobile phone location service for 999 calls". Retrieved 2016-04-25.
  4. ^ "Advanced Mobile Location pinpoints 999 calls to within 30m". ComputerWeekly. Retrieved 2016-04-25.
  5. ^ "AML deployment: Excellent progress in Europe". Retrieved 2016-04-25.
  6. ^ "Advanced Mobile Location is now available in all Android phones!". Retrieved 2016-08-03.
  7. ^ Kannan, Akshay. "Helping emergency services find you when you need it most". Google. Retrieved 22 February 2017.
  8. ^ "iOS 11.3 is available today". Apple. Retrieved 3 April 2018.
  9. ^ "Ministers Naughten and Ring launch new technology that will reduce delays and potentially save lives in emergencies". Retrieved 2018-04-07.
  10. ^ "New caller location system for mobile 111 calls". The Beehive. Retrieved 2018-04-07.
  11. ^ "EENA newsletter - AML deployment: Excellent progress in Europe". Retrieved 2016-06-22.
  12. ^ "Pagalbos telefonu paskambinęs mažametis padėjo sąmonę praradusiam tėvui". Jonavos žinios (in Lithuanian). 2017-01-11. Archived from the original on 2017-08-10. Retrieved 2017-08-10.