You have 3 ways to check the IMEI information:
Method 1: Check the IMEI information from the IMEI label which is stuck to the device body.
Method 2: Enter *#06# in the dialing keypad. (Only for 4G version)
Method 3: Go to the main menu -> “Settings” -> “System” -> “About tablet” -> “Status” -> “IMEI information/Serial number”.