my son received his new iphone about 3 weeks ago. His data usage is way over what it was with his old phone. Verizon waived this months overage but it looks like it is continuing. He is hooked to wifi 98 percent of the time. I am not a tech type guy. I am a user only. Is this a common problem with the new iphones? And why does this use more data with the same style of use. Again is this a common problem for the new iphones and what is the common fix? .