Building on the feature set of earlier models, the Sony Ericsson P1 supports a wide range of push email solutions and Web browsing applications, plus connectivity via hi-speed UMTS and Wireless LAN (WiFi). Add to this its compact size and multimedia capabilities and the P1 is the complete mobile office. It is based on the Symbian operating system (v9.1) and UIQ 3.0, an open platform that offers broad potential for multimedia applications from operators/carriers, content owners and third party developers.