I think smartphones can be annoying. People are always looking at their screens, even when they're with friends. The notifications can be too much, and they're expensive to keep up with.
スマートフォンは厄介だと思います。人々は友達と一緒にいるときでも、常に画面を見ています。通知が多すぎることもあり、維持するのも高くつきます。