How does OPPO verify authenticity?

Hello, if your mobile phone was purchased through the official channel of OPPO, you can log in to OPPO official website-Service-Authenticity and Guarantee to check the authenticity. If you don't buy through these channels, because there are knockoffs and refurbished machines on the market, you can change the IMEI number of your mobile phone by abnormal means, so you can't accurately identify the authenticity of your mobile phone by IMEI number. You can take the purchase invoice, warranty card and mobile phone to the local OPPO customer service center to test and identify whether the mobile phone is genuine. This is the best and most accurate method.