Mobile 2.0,

refers to a perceived next generation of mobile internet services that leverage the social web, or what some call Web 2.0 The social web includes social networking sites and wikis that emphasise collaboration and sharing amongst users. Mobile Web 2.0, with an emphasis on Web, refers to bringing Web 2.0 services to the mobile internet, i.e., accessing aspects of Web 2.0 sites from mobile internet browsers.
By contrast, Mobile 2.0 refers to services that integrate the social web with the core aspects of mobility – personal, localized, always-on and ever-present. These services are appearing on wireless devices such as Smartphones and multimedia feature phones that are capable of delivering rich, interactive services as well as being able to provide access and to the full range of mobile consumer touch points including talking, texting, capturing, sending, listening and viewing.