The accuracy of GPS in mobile devices has continuously improved with advancements in technology. Modern smartphones often support multiple Global Navigation Satellite Systems (GNSS), including GLONASS (Russia), Galileo (Europe), and BeiDou (China), in addition to the traditional GPS (USA). Dual-frequency receivers in newer phones also enhance accuracy by compensating for atmospheric i... https://mobileattendance.com.sg/mobile-with-gps/