There isn’t any way to buy a phone plan that doesn’t include some kind of data plan also, at least for AT&T, and an iPhone.
You have to buy a data plan. Now one thing you can do is buy the cheapest one, and “turn off cellular data usage” (that’s an option in the iPhone). Unfortunately, it can be easily turned back on so not so useful as a parental control.
Alternatively you could tell your children “no using the phone for data outside the home” and check the data usage online on a regular basis. If they use it you can see that they did.
Disagree. I did not have to buy a data plan.
I can disable my son’s plan. We have done that before when something similar happened to him.
And we turned it back on when we upgraded our phones, recently.