Like everyone else, I'm trying to figure out why my step-daughters iPhone 5S has been chewing through data since she left for college.
You are really wondering how your step-daughter is burning through so much data? That first sentence says it all.
Very recently Verizon and AT&T have revived their unlimited plans and with families the prices are actually reasonable. The prices are significantly cheaper for unlimited data on Spring and T-mobile if their coverage happens to work for you.