This. Kids watch adults to learn the adult behaviors that lead to safety, community, and procreative success. If the only lesson they ever learn is that their

This. Kids watch adults to learn the adult behaviors that lead to safety, community, and procreative success. If the only lesson they ever learn is that their behavior when bored is the center of the universe, they are going to have a hard time as adults. Around your children, you should behave in a way that is reasonable and ethical and safe for an adult to behave. You should also make it your first and highest priority that they don't die. If you do those things, then go ahead and play with your smartphone. Chances are, when your kids grow up, they will find work, friends, information, and entertainment valuable as well. There is no harm in teaching them that you value those things too.