You can go to Gome first to see the licensed price of the same model.

Another is to look at the network access license. Parallel imports are not allowed to enter the network (open the battery cover of the mobile phone with a blue network access license sign on it).

If you are afraid of being cheated, first go to the major mobile phone forums to search for the identification method of prawns, otherwise you will be fooled by JS.

Also, personally, if you really want to buy licensed products, you should go to Gome, Suning, Hongtu and Zhong Bo, and the prices are similar.