Culture has various definitions, but regardless of discussions about its concrete definition, the importance of cultural differences has been recognized in areas such as Human Computer Interaction (HCI). In the context of mobile HCI, the importance of culture can be viewed from various perspectives such as usability and ergonomics, business advantages and social sustainability. This study reviews HCI, and mobile HCI research in order to identify common approaches, tools, methods, results and findings in current literature. It is found that the field is missing HCI specific cultural models, has an unclear theoretical basis, and needs to apply user research methods. Consequently target points for further research in mobile HCI are itemized in the conclusion.