How to enable location services with the iPhone?

My dumb boyfriend chose the 'no' option when the iphone asks you to know your location. Now it is telling me to go to settings > general > location services. The only problem is that tab does not exist, when I go under general the 'location services' tab does not exist. What do I do?

THUMBS DOWN to anyone that says go to the general > location services tab. Again, THIS IS NOT AN OPTION FOR ME.

Go to settings at the top it will say lotion services on or off