The survey was completed in four phases, which were employed to produce and
implement a high quality survey questionnaire. First, individual in-depth interviews
were conducted with current users. During the interview, a skilled researcher spoke
with the respondents. The interview format was a semi-structured method in which the
interview was flexible, allowing new questions to be brought up as a result of what the
respondents said. The interviewers in the semi-structured interview had a framework
of smartphone themes. The frameworks included a series of items that should be
explored. The items were provided by a group of researchers and professionals in the
smartphone industry.