Smartphones and their games in particular are very addictive. Flappy Bird creator got rid of it for just that reason. All the games that make it are cute little games that keeps u at it just because of that- theyre just cute little games.
Point is, the phone itself is a cause. People who weren’t distracted by other things so often are now constantly iphoning.
btw the smartphone stupidphone thing is really overdone and just sounds like an old rebbe