Quality of Smartphone User Experience Analysis: Focusing on Smartphone Screen Brightness Level for the Elderly

Quality of experience is a measure of the overall level of customer or user satisfaction with products or services. By and large, the indication of quality of user experience can be measured by using subjectivity measurement and objectivity measurement. This paper aims to study a factor focusing on the brightness level of a smartphone screen used indoors which affects the elderly's smartphone use in terms of quality of experience. The data were collected from 30 samples who were elderly people, measured by using subjectivity measurement. The result indicates that the function of automatic screen brightness adjustment in the selected smartphones such as Apple iPhone 6, Sony Xperia Z3, the Samsung Galaxy Note5, and Asus Zenphone6, used in low-light environments, regarding the quality of experience in the elderly, was significantly different from that of adolescents.