* 1. Please provide your contact information:

* 2. What is your gender?

* 3. What is your age?

* 4. What is your current occupation?

* 5. What kind of mobile phone do you carry and use most of your time?

* 6. In a typical day, about how many hours do you spend using your phone for playing video games or watching videos?

* 7. Have you ever customized your phone's lock screen?

* 8. What app did you use to customize your phone's lock screen?