Why am I suddenly using so much iPhone data?

My contract on my iPhone says that I can use 1GB of internet per month. Normally I use hardly any internet at all, and last month I only used 30MB.
However suddenly in only half a month I have used way over my 1GB data and am being charged for it. I have not been using my internet any more than usual and have had to turn my Wi-Fi off to ensure that I do not use any more internet.

I do not understand why I'm suddenly using so much data. Does anyone have any ideas?

It is probably one of the apps that was updated.

You want to turn off mobile data not WI-Fi. You aren't charged for Wi-Fi.

Have you watched youtube or listened to radio? That could be it. And don't turn wi-fi off, you don't get charged for it, forcing your phone to use data that you pay for, making it worse.

The internet allowance you're referring to is the amount of data you use via the mobile phone network. It does not refer to your use of the internet via a Wi-Fi connection - which is charged (unless it's free) by your internet service provider.

P.S. I let my grandaughter watch Peppa Pig on my phone for a 15 minute car journey - 500Mb were eaten up in that time!

  • Why is my iPhone 5 using so much data? I just got my iPhone 5 four days ago, and I've already gone over my 200mb data plan. Before I had the iPhone, I had a Blackberry Torch 9800, and I've never gone over my data plan. I use the phone the same amount as I used my Blackberry, and I'm connected to Wi-Fi throughout 90% of the day, and rarely use data. So why am I going through my data so quickly?
  • Why is my iphone 5 using So much data? - 2 I get 3gb on my plan, I have a Facebook Messenger app, whatsapp, candy crush and instagram (as does my sister) but she rarely goes over her limit, however i'm able to go over my 3gbs in 6-7 days easily. My last bill was £40 over due to data. Any ideas what it could be? How can i see what uses a lot of the data?
  • Why is my iPhone 5 using so much data? - 1 For the last couple of months my data usage has skyrocketed! I have gone from not coming close to my 750 megabytes to having to beg EE to upgrade me to a 1gb package which I'm now on round to going over double! The only thing that has changed since I got my phone was a new 4g sim a few months ago but apart from that I havnt changed any setting.
  • Why is my iPhone 4s using so much data? I'm trying to install iOS7 but I don't have enough data and iphone says I'm using 10 GB after I deleted all my apps and photos and I always delete the background apps so what should i do?