Your phone uses a combination of several technologies to determine its position:
Phones can detect the unique IDs of nearby Wi-Fi networks. Databases of these known Wi-Fi locations help your phone figure out where it is, even when you aren't connected to them. mobile phone location
Short-range Bluetooth beacons and internal sensors like the compass and accelerometer help refine your position, especially indoors. Managing Your Privacy How to turn on location tracking on Android phone Your phone uses a combination of several technologies