So I just looked up the AT&T Messages App and it appears it is not compatible on the S7 but the Play store thinks it is installed: <UGH I CAN'T Post Links. Just search the Play Store for "AT&T Messages">
So I tried logging into the webapp go to 'messages.att.net'
Durning the log-in/setup...
Same.
I just upgraded to the S7 and have been getting 20+ messages a day since Wednesday. It's really annoying. I've not blocked the number because I want to figure out why they are being sent.
Other threads say it's either:
AT&T Messages (App) needs disabled
Need to disable Messages Backup...
Facebook
Twitter
Instagram