Why can't WeChat receive the verification code SMS?

There are several reasons why WeChat verification code can't be received:

The mobile phone has no charge, so it can't receive SMS verification code if it can't receive information. In this case, the mobile phone can accept SMS after charging, or change its mobile phone number.

the cell phone signal is not good, so it can't be sent to the cell phone. It's better to find a signal and try again.

The validity period of WeChat short messages is generally 1 minutes, so in general, you only need to receive the message within 1 minutes. If you don't receive it, you can check whether the prompt on WeChat is a mistake in entering the mobile phone number. Or contact WeChat customer service.

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The verification code is the abbreviation of "Completely Automated Publicizing Test Totell Computer and Humansapart", which is a public * * * full-automatic program to distinguish whether a user is a computer or a human.

It can prevent: malicious password cracking, ticket swiping and forum flooding, and effectively prevent a hacker from constantly trying to log in to a specific registered user by using a specific program to violently crack. In fact, using verification code is a popular way for many websites now, and we have realized this function in a relatively simple way.

This question can be generated and judged by computers, but only humans can answer it. Because the computer can't answer CAPTCHA's question, the user who answers the question can be considered as human.