The bound mobile phone number is down. How can I get the verification code?

After the bound mobile phone number is down, you can't receive SMS, so you can't get SMS verification code. This is a restriction at the operator level, which ordinary users cannot break through. Only by paying the phone bill can they get the verification code again.

SMS verification code is an effective verification code system by sending verification codes to mobile phones. Both large websites, especially shopping websites, have the verification code function of SMS, which can ensure the safety of shopping more accurately and safely and verify the correctness of users.

Some authentication code providers provide SMS authentication code service. Each website sends a request to the provider's server through the interface, and the server sends random numbers or letters to the mobile phone, and the provider's server verifies the authentication code uniformly.

Extended data:

The most commonly used SMS verification codes are online banking, online shopping malls, group buying websites, ticketing companies and so on. SMS verification code uses SMS verification code to register members, which greatly reduces the data of illegal registration and bad registration.

Short message interface generally supports http and webservice calls. The programmer adds the interface address and related parameters where the short message needs to be sent, such as the mobile phone number of the receiver, the received content and other interface parameters. After the call, xml data will be returned, indicating that the submission was successful or failed. Regarding the reply message, it will be bound to an address that receives the reply content, and any reply message will be pushed to the corresponding address.

Baidu Encyclopedia-SMS Verification Code