One or more embodiments of the invention provide a method, apparatus, and article of manufacture for locating a mobile device. An application programming interface (API), executed by a computer, provides a plurality of simplified procedures that allow an application program executed by the computer to locate the mobile device. The application program invokes the simplified procedures of the API. The invoked procedures obtain a location of the mobile device given an identification of the mobile device and a description of a spatial reference system associated with the location. Additionally, the invoked procedures interact with specifics for a mobile positioning server of a carrier of the mobile device and with different methods of identifying the device as required by the carrier.