Did you send audio by SMS? I'll be back soon.

It depends on whether the other party has been staring at the mobile phone, because this is instant messaging, which means that if there is no problem with the network, the other party will receive the message within one to three seconds after clicking Send. Because of cancellation, the server will keep information for about three seconds. At this time, you can't receive the message by clicking Cancel, but after this time, even if you click Cancel, the other party can still see it.