Start with apple serial number d
The beginning of the Apple mobile phone serial number D indicates that the origin of the device is: Chengdu Foxconn. For example, the first letter of the iPhone serial number starts with "C" for Shenzhen, "D" for Chengdu, and "F" for Zhengzhou. The fourth digit of the serial number represents the year of production, which is represented by 20 letters (excluding A B、E、I、O、U), Note that the number is rounded every half a year. Serial Number