Preview version of the latest Windows Mobile OS, the Windows phone7  is released. Installed on Samsung Taylor phone, some developers impressed but some other are not. Now based on the previewer let’s compare WP 7 with iOS4 shall we? - User Interface, WP7 uses new UI called Metro UI, some previewer from Engadget and ZdNet consider it to be nice flowing, snappy UI with the multi-touch ability provided as well. Not...