1. Abnormal credit card status: check whether the credit card is frozen or stopped.
2. Merchants do not support credit card payment: Although many merchants also support WeChat payment, if you pay merchants by scanning the code, you can only use a savings card, not a credit card, because scanning the code is equivalent to transferring money, and credit cards cannot transfer money.
3. Insufficient credit card limit: As we all know, credit cards can only be consumed if the available credit card limit is sufficient. If your credit card has no available credit limit, or the amount of goods is greater than your payment amount, the merchant will scan your payment code with a scanning gun, because the credit limit is insufficient, and the payment fails.
4. Credit card payment exceeds the limit: credit card WeChat payment has a limit, which can be divided into three types: single limit, single-day limit and single-month limit. The specific limit is subject to bank regulations, and the limit of each bank is different. If you exceed the limit, you can't pay. For example, the single credit card limit of China Merchants Bank is 30,000 yuan, and the single credit card limit of Bank of Communications is 10000 yuan per day.
Basic functions of WeChat:
1. Chat: supports sending voice messages, videos, pictures (including emoticons) and texts. Is a chat software that supports multi-group chat (up to 40 people, 100 and 200 people are being tested).
2. add friends: wechat supports finding micro signals (specific steps: click friends at the bottom of wechat interface-> add friends-> search number, then enter the number of wechat to search, and then click find), check QQ friends to add friends, check the phone address book to share micro signals to add friends, add friends by shaking, add friends by QR code search, and accept friends by drift bottle.
3. Real-time intercom function: users can talk to a group of people through a voice chat room, but unlike the voice sent by the group, the messages in this chat room are almost real-time and will not leave any records. Even if the screen of the mobile phone is turned off, they can still chat in real time. Wechat applet: April 20 1717, the applet opened the function of "long press QR code to enter applet". Tested by Tencent Technology, this function can be used in both iOS and Android. If it can't be opened normally, please update WeChat to the latest version.
Operating environment: vivo mobile phone: Y93 8. 1.0 wechat: 8.0. 13.