Smartphones

1. Yes/ No

1.1. Number of smartphones

1.1.1. Necessary for work purpose

1.1.2. For entertainment

2. Brands of smartphones

2.1. Apple

2.2. Samsung

3. Degree of satisfaction of using smartphones

3.1. user friendly

3.2. Bad impacts aroused

4. Basics

4.1. Texting

4.2. Calling

4.3. Photo/ Video taking

5. Functions

5.1. Apps

5.1.1. Communication

5.1.2. Entertainment

5.1.2.1. Games

5.1.2.2. Photo editing

5.1.3. Social Platform

5.1.3.1. Facebook

5.1.3.2. Instagram

6. The average usage of smartphones

6.1. frequency

6.1.1. more than four hours a day

6.2. harms caused by the overuse of smartphones

6.2.1. irritation of eyes

6.2.2. lack of sleep

6.2.3. inability of interpersonal interactions

6.2.4. mental illness

7. Degree of convenience of using smartphones

7.1. Online banking

7.2. Online shopping

7.3. break geographical boundaries of distant friends and relatives