That is good you will continue teaching them till they know the importance, you know they are still a kids they can't understand what you are telling them.

Because they are still young, all they believe is that is your responsibility to provide money for them and take care of them.

You can't find a phone for them to play with and in the process you can get access to win there heart because it help you to teach them easily.

But you won't give it to them always so that it won't affect their study, and you will monitor them on how they use the phone so that they won't be using it for anything the will influence them badly.

And you too will have freedom to use yours