How-to Check iPhone Production Week
By How-to Check iPhone Production Week
iPhone and other Apple iDevices has 11 digits serial number, mixed both numbers and letters. Each device has a unique serial number and the format of serial number shoud looks like this:
aabccdddeef
where:
aa = Factory and Machine ID
b = Year
cc = Production Week
ddd = Unique Identifier
ee = Color (A4=black)
f = size (S=16GB, T=32GB)
By using iPhone serial number, we can check the production week of the iPhone.
How-to determine the iPhone production week?
Look at the 3rd, 4th, and 5th digits of serial number (b and cc).
Tap Settings → General → About and get the serial number on your iPhone.
Here is the example:
Production Week 
