How to buy a mobile phone to make the salesperson think you are an expert?

Which one do you want to buy? Check the quotations, specific parameters, advantages and disadvantages of several machines of the same model online in advance. For example, if you want to buy N8 1, just take n78 and tell your friends when you go: this model has been on the market for more than a year, and it is still the same model, with a 2.4 Q screen, a 369HZ AMDII processor, 50 megabytes of running memory, eight times automatic zoom and a 3.2 million camera. Unfortunately, mainland licensed products do not have front cameras. I prefer Hong Kong banks to Hong Kong products. Then ask the waiter to take out N8 1 and ask the price directly, because she finds that you are more professional than her. . . Remember to go with your friends and make him look blank when you introduce him.