1. A method of setting an initial location of a user terminal, the method comprising: measuring a magnetic field at a current location of the user terminal using at least of one of a magnetometer, a magnetic field sensor, and an inertial measurement unit (IMU) sensor; estimating an initial location of the user terminal based on the magnetic field; displaying on a display of the user terminal to a user the plurality of candidate initial locations responsive to a determined initial location ambiguity; selecting the one of the plurality of candidate initial locations; and setting the initial location based on both measured magnetic field and the selection of candidate initial location to thereby resolve locational ambiguity.