Our new Nokia Lumia 928 is using large amounts of data, on its own, at regular 6 hour intervals. The average data usage is 40 to 120 MB. I found a reference in the iPhone 5 discussion board that shows the exact issue I am having:
"Since I purchased the iPhone 5 about 4 months ago, my usage has increased approximately 1.5 GB. Each month since I've purchased I've had to call and increase my data. I've spoken to Verizon approximately 5 times with no clear answer and no resolution.
The first month I thought possibly since I had a new phone, it was my problem, however, by the third month I called to see what was going on. I was told that I needed to be sure to shut down my apps after using them (although I had never done this before), I began to do this, and I also began to start tracking the data usage on my phone.
When I started looking at my data usage I noticed that I would have data recorded at exactly the 6 hour mark. So for example, the last three days I have had usage only at the following times. 1:41am, 7:41am, 1:41pm, 7:41pm. This pattern will continue for a few days then it will switch to different times, albeit still 6 hour increments. AND the usage at most of the times is at times that I'm at home on Wifi. When I added up all the usage while I was at home, I found the additional 1.5 GB of usage each month."
There is no correlation between what we are doing and the time that the data is being transmitted. Sometimes it is while we are asleep, sometimes at work, etc.
Help, please! I've had to up our data plan to keep from going over this month, but shouldn't be in this position!
Thanks.