Big data call authentication timeout

You can resend it. If you don't receive it for a long time, you can try again later.

The verification code of the communication travel card is issued by the SMS gateway of each operator. If the number of requests is too large in a short time, resulting in SMS congestion (such as peak hours), you will not receive the verification code.

It is recommended to wait for a while and try again; In addition, if the user actively prohibits the value-added service, it needs to be reopened before receiving the verification code normally.

It is also possible that your mobile phone has set SMS interception, so you can cancel SMS interception. If you still can't receive the verification code, please contact the operator's customer service immediately.