Hi Drish91,
Thanks for contacting Apple Support Communities!
It looks like when you select one message, multiple messages are selected, is that right?
Do you experience the same behavior after you restart you iPhone?
If you enable Airplane Mode then disable Airplane Mode to refresh your network connection, do you still see the same thing? You can enable Airplane Mode then disable it in the Control Center of your iPhone.
Also, this article explains how to troubleshoot your display if it's not working as you'd expect: If the screen isn't working on your iPhone or iPad - Apple Support
"If your screen is too sensitive or responds intermittently to touch
- Restart your iPhone or iPad.
- Make sure that your screen is clean and free of any debris or water.
- Disconnect any Lightning or USB-C accessories. If your screen works after removing an accessory, try using a different outlet, cable, or charger.
- Remove any cases or screen protectors."
We look forward to your reply.
Cheers!