How can I block messages on iPad/iPhone from being read by child using my device.
How to block messages being read on iPad air2/ iPhone 6 Plus by child while they are using devices
iPad Air 2 Wi-Fi
Hi there,
Go to Settings on that Device, Scroll down to find Messages, tap the switch to off (not green). If these are your personal devices you won't have access to Messages yourself too, unless you sign-back in (I wouldn't recommend that, either have them on or off)
Use parental controls on your child's iPhone, iPad, and iPod touch - Apple Support