Why does my iPhone 5 use so much data?

I got and iphone 5 3 days ago, the only time I use the Internet I'm on Wi-Fi, but this morning I got a text saying I've already used 95% of my data! Where is it going? I googled it and it seems like a lot of people are having this problem but they are with Verizon on AT&T, I'm with telus

Turn the data off then

  • Why does my iphone use So MUCH data? I run an iphone 5 on verizon and my data plan is either 4 or 5 gigs per month but i'm consistently over by A LOT, in december it says i used 13 gigs, and i have no idea how thats possible, i may have watched 2 or 3 netflix episodes, and i check facebook and instagram regularly, but other than that i don't use much data, how is my usage so dang high?
  • Why does my iphone use so much data? - 1 I got the phone two days ago and get 500mb of data a month. Like have already used 400 and was wondering how and why it is doing it. I use a lot of social media and facetimed once the day I got it for 10 minutes. I went into O2 and they told me it was because of an update but it is still using a lot of data. I was wondering if there's a way to stop this
  • Why does my iphone use data over night when cellular data is turned off? Every night I turn off cellular data and leave the iPhone on and one day I wake up and check my data manager and see i have already used 25 MB please help!
  • Why does my iphone 4s use so much mobile data? With my old blackberry i would never use over 100mb a month, now i have a iphone 4s i haves used nearmy 500mb in 5 days, why is this? How can i use less? (and yes i already use ovano)