I am desperate to find out why my laptop and/or ipad are using data when I have wifi turned on. It is not coming from my iPhone. Last month's usage was 40GBs and I just cannot afford this!!! Bill was over $400!! I have called Verizon several times and looked online for answers but keep coming up with nothing. I've turned off automatic downloads, upgrades, etc. Son plays Clash of Clowns but from what I have read it doesn't use that much. I surf a lot but 40 GBs?? I sure hope someone can help me because I am going to be forced to go back to the old days with no at home computer. thanks. Mary