If you turn off cellular data on an iphone, does it still charge you?

On an iPhone, you can turn off the cellular data. Under Settings; General; Network it gives you the option to turn off all cellular data. If you do that, does it still charge you monthly for data?

If you in a contract then yeah
You know turning of cellular data is when you have like 100 mb per month u turn it of so email Facebook weather stocks and other apps running in background don't finish your Internet