How to Make a Check-in Location on Facebook | Techwalla
The Facebook Mobile application for smartphones and mobile devices includes the Facebook Places feature that allows users to “check-in” to a specific location. Facebook Places uses map, satellite navigation and cell phone network location technology to track user locations.
Tap the "Check In" button on the menu bar at the top of the screen. This launches the "Nearby" screen with a list of local places to which you can check-in.