Three nice articles about setting restrictions and savvy on your iPhone iOS7. A must read for parents and guardians who should be in charge of how their children interact with, and use technology.
"By putting restrictions in place, we can assure that children, of all ages, are not subjected to content that exceeds their understanding or appropriateness for their age. The restrictions also assist with preventing aspects such as In-App Purchasing, a popular, but often costly, feature of many games on the iOS platform."