Which Smartphone OS is better?

how about android os.. Android OS is based on Linux and is probably more sophisticated than iPhone OS - at any rate, it supports true multitasking which iPhone OS does not (and still will not really support even in its next version). The number of Android apps is second only to the number of iPhone apps, and is growing fast. There are probably a lot of decent Android phones, and which one to get depends a lot on what country you live in and what phone companies are in your area. In the USA, I would recommend a Verizon HTC Droid Eris as a good cheap Android phone.

Ok symbian is a typical cellphone os..so in my opinion as regards functionalities and speed it is a bit low in relation to the next generation of phones such as smartphones!! may be linux maemo always from nokia is much more interesting!!As regards windows mobile is the classic windows style and in reality i will prefer much more linux on devices like that than windows!!

I only like Windows mobile cellphones. In the past my cellphone is Dopod 535 and its operating system is Windows 2003. It works so well and I am very satisfied with it. Currently my cellphone is Samsung I900 and it's operating system is Windows mobile 6.1 and it's much more advanced. I think I can use this cellphone for a very long time, too. I love China

There is no doubt that windows mobile is better than Symbian.

look ma man...symbian is funer than windows moble, windows is better for the bussines user, but the symbian is better for the younger user, who want to play games, have a lot of camera and pics software...If you need to organised your time, your meeting your bussines through stocks and tenders then by windows os phone, but can do it all with symbian, and with symbian you can play lot of games and have lot of fun...