The mobile phone number is basically only used for verification when logging in to WeChat. WeChat can't get the operator's data, so it is impossible for it to know that your mobile phone number has been cancelled. Therefore, if WeChat is only used on one mobile phone, there is no logout and login operation, so there is no need to use the mobile phone number in a short time. And you don't need to change your mobile phone, you can also use WeChat passwords, voice locks and other methods to log in to WeChat.
However, if the mobile phone number is cancelled, the mobile phone number bound by WeChat will not be changed for a long time, and it will definitely encounter some troubles. For example, after replacing a new mobile phone, logging in to WeChat often requires SMS to verify the mobile phone number. And even if your WeChat is logged in with ID and password, it may be verified by SMS.
Because WeChat is generally registered with a mobile phone number, the security level of SMS verification code is higher than that of password. Once the mobile phone device changes, the first thing WeChat needs to verify is the mobile phone number. So when you log on to WeChat, if your mobile phone number can't be used, you won't receive the verification code sent by WeChat, and you can't log on to WeChat normally.
Although in this case, you can also log in to WeChat through the bound QQ number, email address, voice lock, or friend-assisted verification, it is very troublesome to operate. Another serious security risk is that the cancellation of the mobile phone number does not mean that the mobile phone number will no longer be used. Because the mobile phone number belongs to the operator's resources, after the user cancels the mobile phone number, the operator will recycle the mobile phone number and sell it to another user after a period of time.
And when someone else buys your cancellation mobile phone number, and this mobile phone number is bound to your WeChat, he may log in to your WeChat through his mobile phone number and SMS.
Although the other party cannot use your WeChat change and bank card balance without paying the password, if the other party deletes your WeChat friends and chat records, it will also cause serious losses. Therefore, before canceling the mobile phone number, it is best to unbind the original number and bind the new mobile phone number. The operation method is also very simple. Just click on WeChat. Me? , and then click Settings-Accounts and Security-Phone Number-Change Phone Number.
If the mobile phone number has been lost or cancelled, it needs to be replaced by auxiliary verification. Although it's a little troublesome, it's better to operate it to avoid further problems.