Hello! I bought an iPhone 7 Plus. The phone was described by the operator AT & T. But when I enter IMEI on the site, I write “The IMEI you entered does not appear to be an AT & T wireless phone or tablet.” Please re-enter the correct 15-digit IMEI number for your AT & T wireless phone or tablet. From the wireless phone by dialing * # 06 #. ” Tell me where to turn? I live in another country.