You can check phone details using IMEI number, or blacklist your device when it gets stolen. So you should know IMEI nuber of your phone, also if you are buying used device always ask for IMEI number and check if its not blacklisted.
Want ot find IMEI number? Below you can find few methods of doing it.
Using the Dial Pad One way of finding IMEI numbers is to type in *#06# in the dialing field. IMEI number should pop up on your screen immediately (or multiple numbers if your phone supports more then one SIM card).
In phone settings Open Settings app and go to System -> About phone -> IMEI information.
On the box The IMEI number of Motorola phones is also affixed to the phone box.
On the SIM tray On some models you can find IMEI number labeled on the SIM tray.
If you have problems with finding IMEI number you can watch this video tutorial on Motorola Moto G6