A method of positioning a device includes: receiving satellite signals corresponding to at least 5 satellites in a global navigation satellite system (GNSS); determining whether there is one of the satellite signals has a wrong bit edge from at least navigation data of the satellite signals; and in response to a determination that there is one of the satellite signals has a wrong bit edge, finding out a wrong satellite signal among the satellite signals, and using the navigation data of the other satellite signals to obtain a position of the device.