To track a phone number using Google Maps, first ensure that the phone's GPS is turned on. Then, add the phone number to your Google contacts and use Google Maps' 'Share Location' feature to request access to their location. Once they've accepted your request, you can monitor their location on your device.

Search for a place on Google Maps At the top, tap the search box and enter an address, name of a place, or choose a category, like gas stations or groceries. Tip: After you find a place on the map, you can check directions to the place in a list, details about a place, or get directions with voice-guided navigation.

Click on the Google Map menu item, and then click on the Settings tab. You will then see the option to Show all locations. Click to enable this option and Save. Here's how that Google Map menu item looks on a mobile device, with various pins from the custom list visible on the map at once.