I have an iPhone 5 on EE (3G)?

Everyone I know has the Mobile data I their settings which they switch off when not using data, to save battery life. I only have the option of Cuellar data, which when I turn off, I don't receive calls or texts. When I turn it back on all my texts and missed calls come through. Is there a way to get the mobile data option? Or is there anything else I could do.

Tap on SETTINGS then MOBILE and then turn MOBILE DATA off

Go into Settings > Cellular/Mobile and turn off 'Enable 3G'. This should only turn off the 3G and not texts and calls too!

Hope this helped!