iPad Air using cellular when sleeping but connected to wifi
Since upgrading to iOS 7.1 on my iPad Air my cellular usage seems to have increased significantly. In only 10 days of billing, I've already used 900MB of cellular data on my iPad. In contrast, last month on iOS7.0 I used 300MB for the whole month. My usage patterns have not changed.
I've noticed that when my iPad wakes from sleep it always shows connected to LTE but not WiFi. So I did an experiement last night. I reset my cellular usage stats, checked that I was connected to wifi, and put the iPad to sleep. No one used the iPad during the night. After 9 hours, the iPad showed that it had used 38MB of cellular data.
Is anyone else seeing their iPad Air, running iOS 7.1 seemingly use cellular when asleep rather than wifi?
iPad Air Wi-Fi, Cellular, iOS 7.1