If you are running iOS 4 on your iphone  3G and it was not as snappy as you expected to be, stop using it. iOS 4 is designated for iPhone 4 that has better processor and RAM, but if you persistently want this OS on your iPhone 3G/3GS these steps could be a way around it. - Hard reset your iPhone 3G By doing hard reset it clear out the busyness ever engaged off your phone, in this case do it twice. These are the steps... 

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...