Can you disable the smart phone features in a smart phone?

I know the obvious question is why did you get a smart phone if you don't want the features? I got an iPhone as a gift, but don't plan on using the phone for more than pictures, making calls, and texting. Is there a way to disable all the extra stuff that makes the phone more expensive each month? Thanks.|||You may have to keep the data service if that's what you're talking about. You can find out about a different plan.