Operating System (OS) is the backbone in any Smartphone. With every passing year, newer and latest versions of OSs are being brought in the market. The application and design developers of mobile OS are trying to bring the best of it in every newer version. This paper provides a survey on the current OS used in Smartphones and a comparison of most commonly used and newly designed OS in Smartphones market. The authors’ contribution is twofold. Firstly, they conduct a survey asking users about their smart phone preferences which yield some interesting results. Secondly, they propose the design of a hybrid OS for smart phone which combines the paramount features of the on hand OSs.