First of all, you should have a mobile phone that supports nfc and Android version 4 or above. Then, the mobile phone should download some applications that support flash payment, such as UnionPay China UnionPay Express, various mobile banking, or other third-party payment applications. If your mobile phone manufacturer is Huawei, Meizu, Samsung, etc.
How to set JD.COM flash payment for Android phone: Open NFC setting in the system settings of the phone, open the default wallet option, set it to "HCE default wallet, click payment settings, and you can view the entrance of JD.COM flash payment", and then set JD.COM flash payment as the priority payment method.
The steps to open OPPOPay are as follows: Open OPPO wallet and click "swipe card" or "payment code" in the toolbar to add a bank card. Enter the bank card number. You can choose to enter manually, or you can choose to scan the bank card through the OCR function through the "camera" button and add the bank card number.
How to use NFC flash payment for mobile phone: enter the wallet APP, click "payment code", "swipe card" and "OPPOPay" according to different models, and choose to add a bank card. After entering the card number, verify the relevant information according to the prompt and complete the binding.