It's with you every moment of every day. It reminds you of little things that you sometimes forget, like calling friends on their birthdays and picking up the dry cleaning. It sleeps by your side, resting when you rest and working when you work. It even talks back once in a while. But how well do you really know your iPhone?

After months of watching friends and family use their iPhones and iPads, I realized most of them were missing out on a lot of features. I'll walk you through 10 things you might not know your iPhone and...