Maybe phone addicts are mostly introverts, I kinda agree. Based on the fact that extroverts spend less time on their phone because they spend it with people. But don't forget extroverts can spend time on the phone and with people at the same time, by chatting, texting, or calling.

Still, phone addiction is a serious problem in our time. Something needs to be done. People need to be enlightened on the side effects. And governments need to pass laws that will curtail excessive phone usage, assuming that's possible.