Starting October 1, Apple is replacing a new 18-digit part number format for iPhone, iPad, Mac, Apple Watch, and more. Apple has already warned service centers about the use.
Now the company uses serial numbers consisting of 17 characters. The new format will probably only contain details for new products that have not yet met.
Apple to move to longer serial numbers for spare parts in October
Apple will begin using a new and longer serial number format for iPhone, Mac, Apple Watch and other product repair parts starting October 1st.
www.macrumors.com
Source: Iphones RU
