I downloaded Samsung's messenger app.  I could send pictures but it kept sending the same picture 7 times when I was trying to send a sentence.  Plus, it kept asking me to install Messenger Home.  I did...terrible.  Constant ads in my texts.  So, after some research I downloaded Android Messages (Google's official SMS app). Works perfectly with added bonus that I can send/receive texts from my pc. I'll probably keep this app even after this Samsung Pie update bug gets fixed.  It's quite confusing because all of the texting apps are either called "Messages" or "Messenger".  Anyway, this app was top rated on Android Central  https://www.androidcentral.com/best-text-messaging-apps    Hope this helps. ... View more

I have the same problem since the update.  I can't send or receive MMS.  Can't send/receive group texts or pictures.  Xfinity mobile tech told me they had no solution and Samsung was "working on it"!  Anyone figured out how to fix this issue? ... View more