Joke Collection Website - Public benefit messages - I don't know why I can't send short messages recently, but later I found that the number I sent was changed. What's going on here?

I don't know why I can't send short messages recently, but later I found that the number I sent was changed. What's going on here?

You should check whether your SMS center number is correct.

Or is your SMS box full?

If none of these conditions exist,

That is, during a certain period of time when you send text messages, the system is too busy, or you send too many text messages during this period, and the system cannot send information for you quickly. The effect may be better after a while!