I think I will be anxious at first. Because it's very inconvenient if I suddenly couldn't use my phone. Especially, I start my daily routine with the 'to do mate' application on my phone. I'm a person who has a habit of recording(or I'm a planner), and there are many to do lists in several categories, including today's to do, schedule, study, and self-development, act. When I sucessed, I check the check box and also records what I did at all of time on Google Calendar. And there are so many things I do with my phone, such as map apps, calendars, alarms, e-book apps, study, and music that are indispensable. However, a day or a week would be fine. If I don't have to contact someone and don't have a team project to do, I can feel fine without a phone. What I do with my phone can replace it with another analog things. Therefore if there's no contact problem, it won't be bad without a phone. Sometimes I want to be free with phone and take a rest peacefully.