"The best phone I've ever had, I'm serious."4.5 starson by ultramandelectronics
Pros: Truly multimedia, intuitive interface, great design and form factor, 2megapixel camera, great MP3 player.
Cons: Key action is stiff and earphone adaptor a little large.
Summary: I recently had my Treo 650 permanently borrowed (read: stolen), and got the Sony Ericsson w800i based on research because of its features and great reviews. I have never been more pleased with a phone.
Why is this phone so good? It's very intuitively designed. Everything feels and works right. The design that went into this phone is to be commended. The toggle switch (a bit small) is very useful for most functions. The camera is great and actually has built in LEDs for dark photography! Plus the camera button flashes to cue you into the fact that the shutter isn't open. It's little extra touches like these that set this phone apart. And the MP3 player is not just a feature that was crammed in as an afterthought. It actually works well and sounds great. This is a suitable substitute for an iPod.
Here's why I like it better than the Treo 650 (and I'm not a Treo basher. I really liked it when I first got it). It's smaller and more ergonomic. Everything works better together (I realize this is a little vague, but the gestalt of this phone is great. The Treo feels clunky and the features don't always coordinate well). Most importantly, it's much easier to make a phone call on the w800. Trying to enter phone numbers on the Treo keypad was a pain because the buttons are so small. Using the touchscreen was not as convenient. Plus, my Treo kept dropping calls and it would hang up on me before I was even able to answer an incoming call. Very frustrating. The T9 character input is easy to use, and I feel I can enter information just as quickly on this phone as on the Treo. Bottom line--the w800 is a better phone.
The pros of the Treo 650 are that it has a larger screen, and it is a true full function PDA. But its use of the external flash memory was not as efficient as the w800. Although I'm not a big fan of the Memory Stick format, it works seamlessly in this phone.
If you're looking for a true PDA/phone hybrid, the Treo is your better bet.
If you want a phone that works well as a phone, and additionally has a great MP3 player, a very decent camera, and is an incredibly well-designed device, then this is it. Plus you can't beat the orange sherbet/vanilla ice cream color scheme!