Managing a child's device
How can I prevent a child from changing Apple ID or password?
iPhone SE, iOS 16
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See how to 'Use Screen Time on an iPhone, iPad, or iPod touch' by clicking here --> Use Screen Time on your iPhone, iPad, or iPod touch - Apple Support
With Content & Privacy Restrictions in Screen Time, you can block or limit specific apps and features --> Use parental controls on your child's iPhone, iPad, and iPod touch - Apple Support