MicroSky is a planetarium for mobile with Java-support and a connection to the Internet (You need GPRS or UMTS). Microsky V3 extends V2 with even more functions such as a more polished style, Bluetooth-GPS support and a offline mode that reduces the GPRS costs and enables MicroSky for outdoor regions without GPRS reception. To use MicroSky on your mobile phone you will need a User and Password to login: Register here for free: http://www.upto.org/skyserver/editRegistration.do?action=Create&callfr om=microsky