I have a 6s Plus and was running the first public beta since it came out. I updated to the newest release yesterday. All was fine for the afternoon, but then last night I opened messages and the app froze and then crashed. I opened it again and same thing, froze right away then crashed. I tried everything to fix it. Powered off and on, hard reboot, opened messages from Contacts rather than the shortcut, had someone send me a text to see if I could read it, eventually even reset the phone. Nothing worked. Messages remained completely unusable. After a few hours I gave up and went back to 9.3.3. Has anyone else experienced this?