About a week ago, my Group Chat just blew up. I was using Google Messenger on my ATT HTC One M8. The messages I got were "downloading..." from each individual sender in my MMS group chat. They never downloaded, so I just deleted the messages. I restarted my phone, deleted the messages, and cleared the cache. All solutions seemed to work for about an hour. Then it broke down. So, I switched to Hangouts. That worked for a day. Repeated my troubleshooting. Broke again. I tried changing APN as well. No work. Then I switched to Textra. Worked, but then it said "having trouble receiving messages." *sigh.* I removed the SIM, and put it back in. Swapped to Google Messenger, Hangouts, back to Textra. Now I couldn't send pictures in the group. RRRRRGGH. I troubleshooted, turns out Google Messenger was working again. For a day. So, I deleted all the messaging apps and went back to stock. Works for a day. Problem started again. I don't know how to fix it.... Is it ATTs problem, my phones problem, or what? Please help.
