mobile

I noticed today that a few days back the "OS Services" consumed 491 Megabytes of 3G data and 1.81 Gigabytes of WiFi data (as reported by 'my data manager'). That's half my monthly data in one day. In the following days I have seen usage of around 60MB per day, and right now it is virtually down to zero again.

Does anybody know what could be causing this, and how I can prevent it from happening again?

Sent from my Nexus 9 using Tapatalk