Is there a charge for the failure of sending SMS by mobile phone?

I don't know what kind of failure it is

If your mobile phone tells you that you have failed, you will not be charged, but it is possible that the other party has accepted it, so you will be charged. I have been in this situation before.

If the message report tells you that the transmission failed, if the other party stops, there should be a charge.

If there is a problem with the network, there is no charge, and the others are not necessarily. . .

But also depends on the network operator.