: On older iPhones (iPhone 3G through 4S), the number is engraved on the SIM tray. Without the Device Original Packaging : Look for the barcode on the original box. Apple ID Account : Sign in to account.apple.com and view the section to see details for all linked products. Another Device
Here’s a quick rundown of why searching your serial number is so useful and how to do it: Why do a serial number search? apple serial number search
A serial number lookup is not just for tracking your warranty. It is a critical security step in several scenarios. : On older iPhones (iPhone 3G through 4S),