At 1:52 this afternoon, I got an email from Koodo saying I was at 75% usage of data... at 2:52, new message saying I was at 95% usage... tonight, new message saying I am $10 over on usage for data... I am not using the phone at all... why is this happening and how can I stop this?
apps are most likely being updated in the background which is eating up your data. I suggest setting your apps to update on wifi only. playstore>menu>auto updates checked> and make sure update over wifi only is checked as well.