I just bought this phone about 2 months ago, and I have to say, I'm STILL amazed at the capabilities of this phone! I LOVE IT!

Calling Quality:
Some people have reported problems with calls being dropped and poor reception. I'm happy to say I've NEVER had a call dropped before (I'm in New Zealand, on the Vodafone network).

Camera Quality:
1 word: EXCELLENT! Although pictures taken indoors with poor lighting conditions can have an effect on the quality of photos. Nevertheless, if you take photos outside, during the day, then this phone is for you!

Walkman/Music Features:
Easy-to-use Walkman interface, much like the iPod's, minus the clickwheel. I bought a 2gb Sony Memory Stick Duo Pro and have around 4 full albums, and I still have space for "300+" photos. Sound quality through the loudspeaker is top-notch, although MP3 ringtones could be a bit louder.

Gaming:
Although not the best phone for gaming (who games hardcore with a phone anyway?), the W810i should be able to handle all Java games and some 3D games.

Ease of Use:
As with all Sony-Ericssons, the menu system is extremely easy to use, and easy to get used to as well. At a click of a button, the main menu pops up, with bright and eye-catching icons. Before getting this phone, I had a Nokia 7210 for 3.5 years, and I have to say, the W810i's menu is MUCH easier to use, nor did it take me very long to get used to it.

Other Features:
In my opinion, the bundled earphones that come with the W810i are very, very good. Sound quality is impeccable, although with that amount of bass, they can't be good for your ears in the long run :D

Battery life is also very good, considering the amount of features packed into this nifty little cellphone/camera/walkman. I managed to get around 4 days on a full charge, with quite a bit of texting and gaming, with some music here and there.

With regard to the size of the phone, I would have to say it's PERFECT for me. Not too big, nor is it ridiculously small. The keypad is extremely easy to use, well spaced out, and very responsive.

The W810i also has a light sensor at the top of the screen, which detects the amount of lighting at any point in time. If there's enough lighting, the phone automatically turns off the keypad lights, saving battery power. To me, this is a very nice addition.

W810i's screen also has to be given some praise. The 176x220 pixel screen is one of the best I've seen. Photos taken are shown with crisp detail, and images/icons/games etc. are VERY, VERY CLEAR.

Overall:
I would recommend this phone to anyone who wants a cellphone, camera, and music player, but doesn't want to be carrying 3 different gadgets, as the W810i is more than capable of combining all 3 into one excellent package.

To all the people who've been wondering whether or not to get this phone, I say GO OUT AND GET IT RIGHT NOW! DON'T WAIT ANY LONGER! THIS IS ONE AMAZING PIECE OF TECHNOLOGY! :o)