Something that I have my young children doing is writing letters to their grandparents that we mail, I then have to hound them to send something back but its such a nice way to communicate.

I also make it a habit to leave my phone away from me during the day, or when I'm out I will leave it in airplane mode to prevent interruption. It also has the side benefit of saving battery.

slow is better than being addicted to the phone and a constant flow of information and a battle for our attention.