Cyberspace is a nice place, but you have to disconnect from time to time. You're not a lamp 💡, so you shouldn't be plugged in all the time.
A smartphone ensures you are always connected. In the name of “productivity,” you keep a little time-leech on your person at all times.
Practice good chronological hygiene and stop that. If smartphones leech your productivity, it's better to go without — ”If your eye 👁️ causes you to stumble…