Method of determining location

A method of configuring the settings of a mobile device registered to a home telecommunications network, comprising:

• determining the location of the mobile device;
• looking up a model type of the mobile device from a data store;
• looking up configuration settings for the mobile device based on the location of the device and the mobile type;
• outputting the configuration settings to the mobile device;
• wherein, determining the location of a mobile device, comprises:
• monitoring network transactions;
• identifying a first type of network transaction indicating that the mobile device is connected to a component of a foreign telecommunications network;
• identifying a second type of network transaction indicating that the mobile device has cancelled a connection to the component of the foreign telecommunications network;
• locating the mobile device on the basis of the identified first and second types of network transaction;
• wherein locating the mobile device comprises setting the location status of the mobile device as:
• (i) within the foreign telecommunications network if a network transaction of the first type has been identified, and;
• (ii) within the home telecommunications network if a network transaction of the second type has been identified and no further network transactions of the first type have been identified.

A method of notifying a first user of the location of a mobile device associated with a second user, the mobile device associated with the second user being registered to a home telecommunications network, the method comprising

• determining the location of the mobile device associated with the second user;
• outputting a notification message to the mobile device associated with the first user, the notification message comprising the location of the mobile device associated with the second user;
• wherein determining the location of a mobile device associated with the second user, comprises:
• monitoring network transactions;
• identifying a first type of network transaction indicating that the mobile device is connected to a component of a foreign telecommunications network;
• identifying a second type of network transaction indicating that the mobile device has cancelled a connection to the component of the foreign telecommunications network;
• locating the mobile device on the basis of the identified first and second types of network transaction;
• wherein locating the mobile device comprises setting the location status of the mobile device as:
• (i) within the foreign telecommunications network if a network transaction of the first type has been identified, and;
• (ii) within the home telecommunications network if a network transaction of the second type has been identified and no further network transactions of the first type have been identified.