Option 1
Find Serial Number printed on the rear surface of Laptop.
Option 2
Press Start -> Type "Run" -> Type "CMD" ->Type "WMIC BIOS GET SERIALNUMBER" ->Press Enter
Option 1
Serial number is printed on the rear surface of Macbook
Option 2
The window that appears lists your computer's model name--for example, MacBook Air (13-inch, Early 2015)--and serial number.
Open the Android Settings menu>Tap "About Phone"> Tap "Status"
OR
Open the dialer on your phone and type *#06# using the keypad
Open the Apple Settings on the phone > Tap “General” > Tap “About”
OR
Open the dialer on your phone and type *#06# using the keypad