There are a few things you can do to determine if a text message was delivered on your iPhone.

  1. Look at the time stamp on the text message. If it’s after 10 p.m., then it was sent during the night or during a time when there is less chance of being detected by Apple’s anti-spy software.
  2. Check to see if the sender is known to you or if you have sent them before. If so, they may have been sent from someone who you trust and want to be sure that the message was delivered properly.
  3. Check for any attachments that were included in the text message - these may include photos, videos, or other files that could be used to track or spy on the person receiving the message.