You may be aware how important is your iPhone’s serial number. It is a collection of interesting data like the manufacture date and factory ID. So it’s equally important to learn how to decode iPhone serial number.
The serial number on the iPhone also gives information about the week it was manufactured, the factory where it was made and things such as the color and the size of the storage. First of all you need to locate the Serial Number and the simplest way to find it is to open your Settings app and navigate to General -> About -> Serial Number. The Serial Number can also be seen in the Summary tab in iTunes when you connect your iPhone to the computer.
Serial numbers come in the form AABCCDDDEEF which can be read as follows:
AA = Factory and machine ID.
B = Year manufactured (simplified to final digit, 2010 is 0, 2011 is 1, etc.)
CC = Week of production.
DDD = Unique identifier.
EEF = iPhone model, color of device and size of storage.
VR0 (iPhone 2G Silver 4GB) WH8 (iPhone 2G Silver 8GB) 0KH (iPhone 2G Silver 16GB) Y7H (iPhone 3G Black 8GB) Y7K (iPhone 3G Black 16GB) 3NP (iPhone 3GS Black 16GB) 3NR (iPhone 3GS Black 32GB) 3NQ (iPhone 3Gs White 16GB) 3NS (iPhone 3Gs White 32GB) A4S (iPhone 4 Black 16GB) A4T (iPhone 4 Black 32GB.)
E00 (iPhone 4 White 32GB) – Courtesy IyonUK.
For example, the serial 79049XXXA4S is from factory 79 (presumably Foxconn), was manufactured in 2010 in the 49th week, and is a black 16GB iPhone 4.
Sadly, Apple has changed the serial number generation with the CDMA iPhone 4, so this is not applicable for the CDMA iPhone 4 and iPhone 4S. However, certain websites decode the serial number of not only previous generation iPhones but also iPhone 4S.