In the morning, I shopped on the credit card wifi of China Bank, and there was no text message.

First of all, you don't need wifi to receive SMS. . . But you probably wanted to ask, but you didn't receive the notice when you consumed it.

Then make sure your wifi is stable first, because some shopping malls in Hong Kong are very big, and you usually move when shopping, so the signal is good and bad, so it may be because the network is unstable that you didn't send a message.

Secondly, some banks stipulate that orders with a consumption of less than 300 are not allowed to send text messages. Unless you pay attention to the official account of WeChat WeChat, you will be sent WeChat, but you will not send a text message. You can ask which bank your card belongs to.