There are few ways to check iPhone is original or not. You do not need to worry about verifying your purchase if you are buying the new iPhone directly from Apple Store. However, if you are buying a new iPhone form authorized resellers make sure to check following;
Normally Apple provides a limited time warranty (1 year) for all its devices which are purchased either on the Apple store or Authorized Resellers. To check whether your device has a warranty or not, you need to know the serial number.
How to check if the iPhone is original using the serial number
In order to find out the serial number of your iPhone by navigating to;
Settings-> General-> About.
In about you will find an alphanumerical string listed for the field Serial Number. (The number is also printed on the box containing the iPhone).
iPhone serial number check online
Now go to the following website, to check the iPhone original serial number;
https://checkcoverage.apple.com/gb/en/
Then, enter your serial number on the box provided, enter the security code and finally tap Continue button. If your iPhone is original, your screen will display information like the iPhone model, warranty period, telephone support status and more.
However, if your phone is fake then above information will not get displayed.
I think this article will help you to check your iPhone is original or not. So please leave a comment below, and let me know what you think!