Received a short message to change the mobile phone number bound to qq.

Maybe you haven't logged into QQ for a long time, and someone is stealing your QQ number, but just ignore the verification. Also, when you logged into qq, you accidentally pressed the button to change your mobile phone number, but you didn't notice it. Or harassing or swindling text messages, you should also be vigilant. If you really don't operate it yourself, don't pay attention to it to avoid unnecessary losses.