Beijing passenger car index control management information network can't receive SMS verification code.

The SMS storage is full, and the SMS center is busy where the signal is not good.

1. The SMS storage capacity of mobile phone is limited. If the short message storage is full, the received short message will not be cleared in time, and subsequent short messages will not be received.

2, the signal will also affect the sending and receiving of short messages, and mobile phones can't receive them for a long time in places with bad signals.

3. In some time periods, too many short messages cause the short message center to be busy, and the short messages are delayed or lost.