| Immersion in Internet communication |
| 1) I have more fun communicating with my smartphone than having real conversations. |
| 2) Except for using my smartphone, I have no particular hobbies. |
| 3) If the other party is slow to reply to my mail or message, I start to fall out with them. |
| 4) I get irritated if someone speaks to me while I am using my smartphone. |
| 5) Without a smartphone, I find it hard to communicate with my friends. |
| 6) I express my true feelings better via email than by speaking face to face or over the phone. |
| 7) I use my smartphone to escape from reality. |
| Using a smartphone for extended periods of time and neglecting social obligations and other tasks |
| 8) My immersion in smartphone use gets in the way of my studies or work. |
| 9) My immersion in smartphone use disrupts my daily schedule. |
| 10) I use my smartphone when there are other tasks I should be doing. |
| 11) My immersion in smartphone use makes me stay up late at night and I don’t get enough sleep. |
| 12) I feel that my smartphone use time is getting longer and longer. |
| 13) I make smartphone calls even late at night. |
| 14) I talk on my smartphone for more than one hour a day. |
| Using a smartphone while doing something else and neglect of etiquette |
| 15) I use my smartphone when I am talking with other person(s). |
| 16) I use my smartphone when I am eating. |
| 17) I use my smartphone when I am in the company of one or two other people. |
| 18) I use my smartphone when I am riding on a train or in similar situations. |
| 19) I use my smartphone even when I am at work or in class. |
| 20) I use my smartphone when I am walking. |
| 21) Without thinking, I check my smartphone for email or voice mail even when it hasn’t rung. |