I just noticed that I was switched from the 1500 text plan to an unlimited message plan. I never made this change knowingly and they only way I could have done it accidentally is if I messed with it in the AT&T app. I really don't think that's the case though so I'd check if yours has remained the same.
Also, while looking into the change I noticed the one I'm signed up for now is a Messaging Unlimited plan, it says it inclucded MMS and all that, there is also just an iPhone Text Messaging Unlimited which is for texts only, though they are the same price.
Also, while looking into the change I noticed the one I'm signed up for now is a Messaging Unlimited plan, it says it inclucded MMS and all that, there is also just an iPhone Text Messaging Unlimited which is for texts only, though they are the same price.