Smart phones are an important facet of the functionality of daily life. The main smart phone operating systems are Android and iOS. We cannot predict which one will be the winning smart phone operating system in the future. Hence, it is an important issue for consumers and enterprises to know which factors influence consumers to continue to use Android. We construct a dual factor model to explain consumers¡¦ Android use continuance. The dual factors include (1) dedication vs. constraint, (2) cognitive constraints vs. psychological constraints, and (3) internal lock effect vs. external lock effect. Data collected from 296 Android consumers in Taiwan were tested against the research model and confirmed our hypotheses. The results support the theoretical model in explaining the effect of ECT theory and status quo bias theory on consumers¡¦ intentions to continue to use Android. Finally, we find inertia is the most important factor influencing consumers¡¦ continued use of Android. The main contribution of this study is to provide a dual factor model for consumers¡¦ use continuance behavior. This model can also be applied to different technology products.