How to turn off Data on an iphone 5s?

I want to save money on my bill and i wondering how to turn off Data and will i still be able to call people?

You go to your settings and look for "cellular" it will be green. Then once you touch it, it will say "cellular data" and you turn it off. Yes, you will still be able to call people and send text messages. But you will not be able to use iMessage because it uses data and Wi-Fi for that. If you have anymore questions or need help just message me!

Turn off cellular in settings but have Wi-Fi on.