Now-a-days mobile devices like iPhone, android phones, HTC mobiles etc. are not just used for making calls, text messages and for basic operations. Now mobile phones have become smart phones; they can be used to perform almost all the work that can be done on computer. Cloud computing has developed the latest trend regarding development within the quickly building mobile world. In cloud computing information storage and information handling are continued on web as opposed to on a single device. In this research there will be introduction to CC related to mobile devices called mobile cloud computing (MCC), comparison of G Cloud and i Cloud (two platforms providing cloud computing utilities for mobile devices) and in the end take a view of impact of cloud computing on smart phones. The main objective of research is that to understand the concept of “Mobile Cloud Computing” and   investigate CC impact on mobile devices, which will help overall students and will be supportive in the upcoming for related application in portable expedient.