I have the most say in this question. Telephone follow-up records are often dropped during use and recorded. The salesman came and said it was good. Then when you buy it, then the phone can't record and upload it. Or just watch the mood upload. One minute you can, the other you can't. It's very unstable. Then call the customer service and say that the mobile phone is not working. Then they shouted for the Xiaomi mobile phone they sold. Then you will find that it is still the same after changing it, or it is a landline. Then you have to buy their EC box to use the landline, and then it's quite pit. 120 yuan each. It is also installed on the computer, and its own ec box is installed. The computer has no sound.

Besides, when the salesman came to tell you, what he said was smallpox. After you buy it, you will become a grandfather. The standard format of the contract is the overlord clause. I'll give you the contract if you find a problem with him.