STEPS
TOOLS
Are you one of those people who keeps going Over your data limit each month. I go over by so many gigs it's  stupid. hate limiting myself but this is what I do when I get 90 % of data used.  Settings
Go to general
Go to network
turn off the cellular data. Now you can only use wifi. your phone will only be used for calls and texts until you start your next month. I hate being restricted but if you have to do it, do it!
 iPhone 
 Pointer finger or any other finger
 Eyes
 Common sense 
 A buttheaded cell phone provider

How to turn off data capability on an iphone

For the iPhone addicts, who rack up those 10 dollar charges for data usage like me.