The purpose of this study was to investigate the influencing factors of the independent variables, i.e. brand affect, brand trust, customer satisfaction, perceived quality, advertising spending, customer orientation, and CSR toward brand loyalty as dependent variable for the Apple iPhone in Phnom Penh, Cambodia. Then, the conceptual framework was designed from the theoretical framework, and hypotheses were constructed from the conceptual framework in order to know the relationship between dependent variable and independent variable. The researcher targets university students both male and female who currently use the Apple iPhone. A total of 400 questionnaires were distributed at the top five rankings of number of university students in Phnom Penh, Cambodia. The researcher used SPSS software for the statistical treatment of data by applying descriptive analysis and inferential analysis.The results of this study showed that brand trust had a high positive significant influence on brand affect, perceived quality had a high positive significant influence on satisfaction, advertising spending had a high positive significant influence on perceived quality. Furthermore, brand affect, brand trust, satisfaction, perceived quality, and CSR had a positive significant influence on brand loyalty in terms of behavior, commitment, and price tolerance. Whereas, only one variable which is advertising spending had a negative significant influence on brand loyalty in terms of behavior. However, customer orientation had not a significant influence on brand loyalty in terms of behavior, commitment, and price tolerance
