How to restrict access to iTunes, App Store, and iBooks with parental controls for iPhone and iPad

[iMore.com]

Before letting a child or teenager loose with an iPhone or iPad, you may decide that you don't want them to be able to purchase content without your consent. If blocking in-app purchases isn't enough, you can completely limit their access to the App Store, iTunes, and iBooks through restrictions. This way they can't purchase any content without asking.

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