Mobile devices have change our life exceedingly and universality in every day. Mobiles are majorly involved in digital crimes and digital investigation as well. Mobile forensics act as a part of digital forensics analysis and aim of it is to get data or digital evidence from a mobile device under forensically sound conditions. When a mobile device is involve in crime or other incidents, the investigator requires lot of proper tools and techniques to recover evidence from such devices and their associated media. In investigation, smartphone's are using as digital evidence, which include several different tasks like taking discreet photos, searching conversations. Generally, camera of mobile phone is used to capture the image & store them for as a event. But sometimes, it is used in such a way to capture personal critical data or to steal a secret file of a competitor, or simply use it in a blackmail situation. So, investigators faces several challenges during investigation in extracting vital information and the pivotal data stored in the smartphone. The aim of this paper is how we can discover and analysis of vital information which is available on the mobile device. We are also analysing 3rd party application data which is involved in different criminal activity. We have analysed the data using different tools and techniques which is used in corporate world.