How to tell the iPhone's Official smartphone or brand new smartphone

Do you know if your iPhone is "true" or "false"?
iPhone XS Max is currently the best mobile phone with the highest attention, but the price is too expensive, so many friends who like iPhones can only buy their favorite iPhones by other means. It is undeniable that compared to the second mobile phone and refurbished smartphone, the official refurbished smartphone is undoubtedly the most secure, but in addition to this, there are official replacement smartphones, original smartphones and other versions. What do we do if the dealer steals various concepts to flicker?
Today, I will teach you how to distinguish between the iPhone's official smartphone, the official replacement smartphone, and the brand new smartphone.
Official turning smartphone
The official refurbished smartphone is the official refurbished mobile phone that will be returned within the validity period of the return or replacement of the mobile phone, or failed to pass the strict quality inspection, updated parts, strict assembly inspection and equipped with new parts, repackaged for sale before shipment.
Highlights: The discount on refurbished smartphones is large. For those who prefer a certain type of smartphone, and the budget-conscious motor oil, the official smartphone is undoubtedly the best choice.
The iPhone's official turn-over smartphone is the iPhone in the production process when the quality of the product or the product returned due to trapped products, Apple officials will disassemble these, replace the problematic parts with new parts to refurbish and test the phone Sold after qualifying, with normal warranty.
Note: There is no official iPhone on Apple's official Chinese website. The official products are Mac, iPad and iPod. In fact, the iPhone 5 has provided official turnaround time, but now it has been canceled. Therefore, if someone wants to sell you an official refurbished iPhone, this is basically a traitor.
How to check if your iPhone is turned over: In "Settings", "About this unit", the turn over usually starts with "ND" or "FD".
Official change
The official replacement is that when non-artificial damage occurs and Apple products have problems, Apple will replace a brand-new mobile phone for consumers in accordance with the warranty terms. Unlike the official smartphone, the official smartphone only changes the mobile phone without changing other accessories.
At present, there are traitors selling under the name of the official replacement smartphone in the name of the original smartphone, in order to obtain profits in terms of accessories and other aspects. We recommend that you go to the official website or Apple Store for a replacement to ensure protection.
How to check if your iPhone has an official replacement method: "About this unit" in "Settings", the official replacement usually starts with "N", "ND", "NF".
Original smartphone
The intact smartphone is the one that has not been disassembled and has not been activated. It is an intact smartphone purchased in the regular channel. Many traitors will replace the "real" mobile phone with a new mobile phone case and sell it as a new phone, so it is still recommended to buy from official channels.
Whether it is the intact smartphone or not can be clearly distinguished only by checking the inaccuracy of the activation date. You can also check-in "Settings" and "About this smartphone". The original smartphone starts with "M".
Recently, in order to improve after-sales service, Apple launched an application called "Apple Support" in the App Store. After installing "Apple Support", users will automatically load all your Apple devices under the account, and will display the warranty period, serial number, etc. of each device. They can also communicate with the after-sales team, which is more convenient!
Anyway, the method of identifying the serial number can only be used as a reference. Xiaobian still recommends buying from the official website or authorized official offline channels. Since we want to buy, we buy the best, don't we?