Continually reaching 100% of my data allowance - but hardly ever use 3G/4G?

I'm with Virgin and have an iPhone 5s. For the past several months, I get texts from Virgin telling me that I have either reached 50%, 85% or 100% of my data allowance. The strange thing is, I hardly ever use it.

I'm not great with this kind of stuff - should I visit the Virgin assistance shop? Is someone leaching off my internet?

You have apps running in the background.

Do you facebook, twitter, youtube on your phone? All these use data, and if you are away from home (or haven't set up your Wi-Fi on the phone at home) can very quickly eat up your data!

Is anyone using you hotspot, becareful with Wi-Fi it is easy for hackers to get in your account so iif its data you have not used look into getting pasword changed. But if you use Facebook or any other social media site u probably stay logged on and don't notice

A simple solution to this is to always switch off your iPhone's 3G/4G when you're not using it, and simply turning it back on when it's needed. This can be achieved by opening your "Settings" application on your iPhone, tapping "Mobile" once you've opened the app, and then simply sliding the "Mobile Data" switch to off. This ensures that you're controlling the use of your 3G. A problem many people face is forgetting to switch to their Wi-Fi unit when possible, and accidentally using their data. The process I mentioned above will prevent this from occurring. It's unlikely that anyone's "leaching" off your internet, so don't worry about that. If you're still worried about that, head to the "Settings" application on your iPhone, hit the "Personal Hotspot" tab, and then, once again ensure this option is off. By turning "Personal Hotspot" off, only you can use your mobile data.

If none of this helped, I suggest contacting your network provider.

Hope the above mentioned helped-
Benj.