Need to turn off Data at night for kids phones

@Mike: the internet works because they are connecting to a WiFi signal and thus getting data that way. What I did while my kids were home, I changed the wireless router password, update each device that uses wifi with the new password and I did not share it with my kids. As a result, no data at home neither. Problem solved at home and while you are in places they do not have wifi for free. Remember, the solution I provided was only in reference to the phone data plan only. And yes, it works. Now, make sure to logout of your account and log back in and check it to see if your changes took place. If you have trouble doing it yourself, then t recommend contact t-mobile support and they can help you. Now, go and play.