Welcome to SMART PHONE ADDICTION INVENTORY – SHORT FORM. Below are some sentences about people's smartphone usage behaviors and experiences. Read each sentence carefully and mark the box that best suits your situation in the LAST THREE MONTHS.

1. Although using a smartphone negatively affects my relationships with people, the amount of time I spend using my smartphone has not decreased.

2. I've been using a smartphone for a long time now and I spend more money on it than I thought I would.

3. Although I tried to spend less time on my smartphone, my efforts were insufficient.

4. I feel discomfort such as pain and stinging in my back and/or eyes due to excessive use of my smartphone.

5. Since I have made using my smartphone a habit, my sleep quality and total sleep time have decreased.

6. Smartphone use had significant negative effects on my academic performance.

7. I feel restless and/or irritable when I don't have my smartphone with me.

8. I get anxious when I don't use my smartphone for a certain period of time.

9. I realize that I spend more and more time with my smartphone every day.

10. I have significantly increased my weekly smartphone usage time.

Thank you for completing SMART PHONE ADDICTION INVENTORY – SHORT FORM.

-TechWell Team