8 Easy Ways to Cut Backbr on Smartphone Usage.br Although smartphone are extremely useful, they canbr also be extremely harmful to a person’s mental health. .br According to a study published on br the website ScienceDaily, smartphone br usage has been found to negatively br alter a person’s brain chemistry.br Here are some ways br you can cut back.br 1. Keep Track ofbr Your Screen Time.br 2. Turn off Uselessbr Notifications.br 3. Buy a Realbr Alarm Clock.br 4. Designate Phone-Freebr Times During the Day.br 5. Turn offbr Phone Vibrations.br 6. Spend Time Focusing onbr Other Activities and Hobbies.br 7. Ask Friends tobr Hold You Accountable.br 8.