The prices for a newly purchased Mac are not negligible. On sales sites secondhand there are many deals at attractive prices, but before you buy from there, it's good to know if the product is still in the warranty period. There are many offers with the title "MacBook Pro NEW in box!", But that does not mean that product is still in the warranty period.
Guaranteed service which is very important if you have problems with the product. How expensive is a new Mac, how expensive is its repair in an authorized service Apple. I would not even recommend trying his repair elsewhere.
How can we find out if a Mac, iMac, MacBook is still warranted
All products Apple they have a unique series. A "Serial Number" that can be found both on the back of the device (very small writing) and on the original box, on the invoice and in the macOS operating system. So, the variants through which we can find out the series of a Mac are multiple and we talked about them in the tutorial "How to find the serial number of a Mac / MacBook (Serial Number)?".
For users who do not want to sell or buy a Mac, but want to know if their device is still under warranty, the most convenient is to find out from "About This Mac". Click on the logo Apple from the top left, click "About This Mac". Copy "Serial Number" from the "Overview" tab, then click on the "Services" tab and click on "Check my service and support coverage status."
You agree to have your device's serial number sent to Apple.
On the web page that opens, enter the copy of the first copy and the verification code.
Click "Continue" and it will show you the status of your product.
You can check the status of service and support for iPhone, iPad, Apple TV, HomePod, AirPods, Mac or any other product Apple which implies a guarantee, at: checkcoverage.apple.com/us/en.