So I just noticed that my computer is using a TON of data. I recently switched over from AT&T Edge network on Sunday Night, and now I am on Verizon 3G all the time. We have an unlimited data plan which is good, but I don't understand why I am using almost close to 12GB's of data in less then 5 days?
Are you watching Netflix a lot? Downloading a lot? Using Pandora? Slacker? Etc. A LOT? I think that could do it. Not sure though. I don't really look as I am on unlimited. Unless Verizon gets greedy and turns into a follower and goes the way of AT&T and takes unlimited away. If that happens, I am no longer going to stay with Verizon and I will go with Metro PCS or someone less greedy.
I had the same problem with my 16 GB vzw iPhone. My data usage was saying I used 44.5 GB of data! this was so wrong because I almost always use wifi and usually turn cellular data off. I got a new 32 GB phone and never turned cellular data off. This seemed to fix the problem. I had called both apple and vzw and they said on their end my data usage was showing 88.6 MB not GB. Could be a possible bug with turning cellular data off. Have you done this before? Try dialing *228 option 2, for this helps problems sometimes.
Try resetting the statistics on your iPhone (at the bottom of the usage page). Unless your actual account is showing that you are using that much data I think it's just a "bug" that popped up on the usage page after the 10.1 carrier update occurred. If you want to get a more accurate reading of what data you have used you can log on to your My Verizon account or dial #3282 on your phone.