After upgrading to Android 6.0.1 (Marshmallow), can't send or receive SMS texts? After upgrading to Android 6.0.1 (Marshmallow), I can't send or receive SMS texts. 

I'm on a Galaxy S6 on Verizon. I tried rebooting in Safe Mode, disabling Google Hangouts, uninstalling Mighty Text, with no change in status. I used Samsung Messages, Google Messenger, all with no results. I don't have permission to edit my Access Point Names. 

Help?
I had the same problem. I fixed it by doing this:

Go to Settings -> Privacy and Safety -> App permissions -> SMS

Turn off the Messages app and turn it back on.