There are a few things you can do to check if someone read your text message on Android.

  1. Scroll down to the bottom of the message and look for the “read” indicator. If it’s green, then the person read it. If it’s red, then they didn’t and you should delete it.
  2. Check for replies to your messages - if there are any, look for those that have been replied to already or that have been updated since the last time you sent a message. If there are none, then the person probably didn’t read your message and you should delete it too.