In [9], Saranya Ruensri studied the behavior choice to buy mobile phone between blackberry
and other mobile phones of students in Chiang Mai University. The information was of primary source coming from questionnaire interview of 400 samples from total 24,592 students during May 2010. It was found that product, price, buying objective, functional capability of the product and the current popularity of specific mobile phone models were associated with the decision to buy Blackberry or mobile phone. Functional capacity of the product factor is the most influential factor.