In the current version of iOS you can use a sidewards motion with a hand to switch between open apps. Kids seem to discover this quickly.
Most people don’t know how to close apps or just don't bother. So you may inadvertently have apps open.
This can cause a child to switch away from TapToTalk. Here is how to prevent this:
- Go to the Settings app of the device
- Select "General"
- Turn “Multitasking Gestures” to “OFF”