If you have multiple mobile devices, you should install the Find My Device app on each one to help keep track of them all.

Phone gone missing? Here's how to use Google Maps to find your device. Well, it's actually a different Google service, called Find My Device, which will use Google Maps within its interface to ...

Since then, Google has launched its own Find My Device network, which supports unknown tracker detection, though some may be more comfortable with having both apps working alongside each other.