Apple mobile phone is blocked. Will texting show that it has been delivered?

After Apple's mobile phone is blocked, sending text messages to hacked contacts will not show delivery. When messages are filtered or ignored, you will not be prompted to send them. If you are worried about being hacked, you can try calling the other party. If you hear a normal ringtone and get a response, it means that the number has not been hacked, and the other party has not seen or does not want to reply to the text message.