You can apply for after-sale, buy through normal channels, whether you buy online or in a franchise store, you can replace or return it after sale.
Online shopping is mainly aimed at large-scale guaranteed networks. If it is a small website, there is no guarantee. If you buy from a large website, you can directly apply for after-sales. Generally, you can apply for a replacement.
If you buy from a physical store, you can go to the physical store to replace the new machine or return it as long as you bring the purchase voucher.
How to identify whether a mobile phone is a refurbished machine;
The secret of numbers. Click Settings-General-About this machine, and you can see all the information of this machine. One of the settings in the machine is the serial number, which is very important for iphone. The seemingly irregular combination of numbers actually reveals the date of birth of the iphone.
Digital reminder. In the dialing interface, press the serial number of "* # 0 6 #" in turn. This set of numbers must be exactly the same as those on the phone card slot to verify identity.
The handwriting on the back cover. The trademark information marked on the back of the iphone is different, but if you compare it carefully, the machine with Chinese characters indicates that it is licensed in mainland China, and the machine with Chinese characters indicates that it is licensed in Hong Kong.
The information in the screw. The only two screws of iphone4 should be carefully observed, some are cross-shaped and some are plum blossom-shaped. Apple's early products are all cruciform screws, which are easy to renovate. Later products are all plum blossom screws, which are not suitable for finding. The plum blossom screw is very new, polished and without any scratches. These two screws can also be a breakthrough for you to identify refurbished machines. If you buy a new machine and it's a cruciform screw, there must be something wrong. In addition, it is not difficult to see whether the screws have been passivated and polished.