Carrier Serial Numbers Explained
The following will explain a Carrier serial number sequence. NNNNANNNNN This serial number format was used in the 1970's through current.
Trane Serial Number Decoder
The first 4 numeric characters are the week and year of production. For example, a unit that came off the line on March 25, 1999 would begin with 1399, week 13 of the year 1999.
ANNNNNN This serial number was used from 1969 to 1990. The first alpha character is for the month of production. A-M = Jan-Dec 1969-1979 N-Z = Jan-Dec 1980-1990 'I' and 'O' are not used The second digit, a numeric character is the production year The balance of the numeric characters are the production sequence e.g., A912345.this serial number would be a unit produced in Jan 1969 P512345.this unit would have been produced in Feb 1985.
What's In Here. Image Credits: This article was written to share with all you how to check iPhone carrier lock status by either using the model or IMEI number of your device. However, let me clear this with you that this is not to promote nor encourage any out-of-the box activities like unlocking your iPhone or any of your Apple devices – it’s entirely up to you if you want to.
The main purpose why I’ve written this article on how to check iPhone carrier lock status is because most of us consumers don’t know if the iPhone or any Apple devices we are buying are stolen or locked by a certain local or International carriers. Most especially if you are buying the iPhone from someone you don’t really know or from an un-authorized seller of Apple products. This is just another precautionary step for you to protect you from people who wanted only your moolah or money.
There is nothing for you to download from the listed tools below. These are all online tools to help you check iPhone carrier lock status. And all you need is either the model number or IMEI number which is in the iPhone you are about to purchase.
You can check from my other article on how to get the serial number or IMEI number of your iPhone. Or simply go to. Quick List of iPhone carrier locked models This may not be complete (you may want to contribute by providing some feedbacks below) but it will be sufficient enough to identify quickly if the iPhone is locked.