Though arrived late on the scene, there's no denying that Microsoft needs to hit the ground running. Windows Phone 7.5 codenamed "Mango", brings a ton of features not less than 500.






THUMB'S UP:  


 Fresh Signature Look :  pick up any Windows Phone 7.5 device and you'll be greeted with a uniform user experience- the Metro UI. The 2 columns of live tiles now is dynamically updated with information such as unread Facebook messages or emails and you can go even pin third party apps to the start screen. Instead of looking at different apps for Facebook and Twitter, your social stream is now built- into the OS and available on a tile. Perfect for glancing and going.

 Vastly Improved Email And Messaging : multiple email accounts in one universal inbox, threaded conversations, texting, FB chatting and IMing from one single app - it manages to pull off integrated messaging in a way that feels more complete and natural than any other platform.

 Internet Explorer 9 Mobile :  packing in the same rendering engine as its desktop sibling, IE9 Mobile is highly compatible with websites of all sizes and shapes and it sports the same hardware-assisted text, video and graphics representation as well, which makes it feel very fast to boot!


THUMB'S DOWN :

Still Very Much A Work In Progress : multitasking is fidgety, services like GTalk and Foursquare aren't tied in to the Start page experience. No allowance of customization of the look.

 Apps :  still a long way to go to even match the depth and the variety of Android apps, leave alone iOS apps.   (sources: internet and magazines)