With the continuous development of mobile payment, it is no longer necessary to bring a credit card when going out for consumption. For example, if you tie a card on China UnionPay Express APP, you can enjoy online payment discount. There are many reasons for the failure of China UnionPay Express Card swiping, and the solutions for different reasons are also different.

1, the NFC function of the mobile phone is not turned on: the principle of credit card China UnionPay Express is to turn on the NFC function of the smart phone, bring up the page bound by China UnionPay Express APP, put it near the POS machine with the flash payment sign, and then swipe the card. The solution is to turn on the NFC function of the mobile phone.

2. Abnormal credit card status: Many people's credit cards can't be swiped after being bound by China UnionPay Express, or they are frozen, blocked or stopped by banks. The solution is to unbind the old card and rebind a credit card that can be used normally.

3.POS machine reasons: For example, the POS machine that swipes the card has no flash payment function, or the network of the POS machine is unavailable, and it is impossible to perceive the information of China UnionPay Express. There is a blacklist of banks on the POS, which restricts transactions. It is suggested to change the payment method, such as scanning code payment in China UnionPay Express.

4, mobile phone reasons: For example, the mobile phone network is not good, it is recommended to restart or connect to wifi, such as China UnionPay Express APP system update or maintenance, and China UnionPay Express card can be used only after the system is stable.