I have changed my research topic to ' Development of VR (virtual reality) and AR (augmented reality). The reason of change of my topic is because I had selected development of smartphones but I feel the smartphones are developed enough to carry out all the basic and smart works. Development of VR and AR are one of the main topics in IT and also I would give a lot of information from my research and would learn about the new technologies, that's the reason I have changes my topic.