Mobile device position determination method and device and mobile device

The invention belongs to the technical field of satellite navigation and positioning. The invention provides a mobile device position determination method and device and a mobile device, and the method comprises the steps: determining a plurality of candidate weeks according to the reference information of the mobile device when a satellite signal starts to be received, and carrying out the hit probability evaluation of the plurality of candidate weeks according to the reference information; wherein the reference information is a historical week number; selecting one by one according to the hit probabilities of the candidate week numbers from large to small, and performing residual calculation on a position associated equation of the mobile device according to the received ephemeris data and the selected candidate week numbers; after each candidate week number is selected, if the residual error is smaller than a preset threshold value, determining the candidate week number corresponding to the residual error