What does the 30-second frequency limit of mobile phone number mean?

The 30-second frequency limit of mobile phone number means that the number exceeds the limit. With the same mobile phone number, the number of short messages sent within 30 seconds shall not exceed 1. If the limit is exceeded, you will be prompted that the frequency of sending short messages exceeds the limit. Please wait a minute and try again. The number of short messages sent within 1 hour of the same mobile phone number shall not exceed 5. Exceeding the limit will prompt: the number of verification codes sent this hour exceeds the limit, please try again later.

Definition of frequency limitation

Rate limiting refers to the limitation of frequency. If a place limits the relevant frequency, that is, it is equivalent to the relevant frequency, then it is limited in this place. After such a restriction, it will be limited above this frequency, and it may not work below this frequency. The restricted frequency should be a frequency range, and related items can only be used within this range.