I used it. There are problems at both ends in three days, sometimes they can't be brushed, sometimes they can't be mentioned, and sometimes it takes several days to get the account. The most terrible thing is that the customer service phone can't get through when there is a problem. I have tried their phones and mobile phones in official website. Finally, someone answered (10 am), but I didn't wake up after listening to the other person's voice. I advise my friends not to buy it, because people with similar psychological quality will be driven crazy.