Can you tell if the other person blacked you out by texting with Apple's mobile phone? There are exclamation points when sending text messages.

Apple's mobile phone can't tell whether the other party has been blacked out by texting.

Because the short message is charged, your terminal will show that it was sent successfully. If the other party blackmails you, the other party will not receive this message and will be intercepted by the system. So you can send and show success, and the other party will not receive it, or it will be directly displayed in the intercepted SMS after receiving it. If you want the other party to receive your message, you'd better send it by another phone number.