iPhone SE Not Receiving Group Texts or Media

Thank you for reaching out to us, @stenography_legend ! Allow for us to further investigate, as well as provide helpful suggestions into your messaging inabilities!

Before we continue, we would need a little more information from you to be provide additional assistance:

• Have you tried Resetting Network Settings? Has your mobile device been updated to it's latest version available?
• Have you tried running your mobile device through our Troubleshoot & Resolve Tool?
  • These helpful suggestions provided have been shown in the past to aid our users, and resolve any technical issues they have been experiencing. Feel free to give these an attempt!
• When did this occurrence first happen? Was there any actions made to your mobile device, prior, to this occurrence? 
  • Please let as know as much information as possible, so we can continue to help!

We kindly await your response!

Ty, AT&T Community Specialist