There is an IMEI code on the package, do not unwrap the phone after you get it, and send the IMEI code on the side of the box to the customer service of the Xiaomi Mall, customer service, to help you check the activation time of the phone. If we can't find the activation time, it's new and unopened. The activation time can be found, and it may be a mobile phone that is returned for seven days without reason.