Our family has 5 iPhones (6s and 6s+ on Verizon), and our son is consistently using up 90% of our data allotment. We've gone from 10GB a month, to 15GB to 20GB to 25GB and still he continues to consume our cellular at an amazing rate. He insists he is not streaming music nor videos, so I'm trying to figure out what apps might be using up so much data. I know the kids these days do a lot of the SnapChat thing making "stories" but I have no idea how much data that uses. I've looked online for a list of Apps that tend to be demanding as far as data use goes, but I haven't found any. We will probably be implementing the Verizon "FamilyBase" to throttle his monthly allotment if he can't cool it.