How to identify the authenticity of BBK vivo s7? thank you

There's BBK's forgery machine. If you want to identify the authenticity, there are two ways. One is to log in to BBK official website, and there is a mobile phone authenticity query at the bottom of the browser. Click here to enter the relevant information of the mobile phone. Another way is to send it to the local BBK service center, and the staff will help you identify it. These two methods are the most effective and fastest.