Over the last two months, my data usage has spiked. I even had to go to a larger GB plan so I don't run out of data. Prior to that, I hardly even used one or two Gigs in a month. Something is going on, and I do not like that I am paying so much for my usage. My son switched to A T & T and pays much less than I do for unlimited usage. Surely wish that I had not upgraded to an iPhone 7 and extend my plan. I should have switched, too.