Here's an interesting one-off about Windows Mobile 6.5. Microsoft has mandated that all phones running the OS feature a physical "Start" button.

Microsoft finally got around to giving official word on the stopgap disaster relief measure known as Windows Mobile 6.5, and here it is: Marketplace, My Phone and the new interface are, as expected, happening.

The Samsung BeatDJ and BeatDisc are just cellphones, but they promise "deep rich bass and crystal clear treble" through stereo speakers featuring B&O's ICEpower amplifier. We're ever so skeptical.

Samsung is working hard to up the ante on cellphone camera resolution. But forget digital cameras. With their 8MP Omnia HD (spotted yesterday), Samsung is going after camcorders.

I got a good feeling groping the Nokia N97. Not in my pants, but close. Unlike the boring E75, it goes beyond "nice," The interface—which divides the screen in big, easy-to-click buttons—felt quick.

The E55 is superficially similar to the BlackBerry Pearl, with its low-profile design and half-QWERTY keyboard. The main difference? The E55 is hilariously slim, at just under 1cm.

The long-since-leaked E75 has been announced by Nokia, offering bring a new form-factor to Nokia's smartphone lineup.

As you can see in these videos, the Sony Ericsson Idou's is extremely smooth and elegant. I want it. Seriously, I want to lick it more than I want to lick Beyoncé's underpants. Portrait mode:

HTC's Touch Diamond, and its QWERTY'd doppelganger the Touch Pro, have formally passed into their second generation, with bigger screens, higher (WVGA) resolution, better battery life, and deeper interface changes.

I got some quality time with a Garmin Nuviphone G60, riding around Barcelona in the back of a jet-black Mercedes limo. My hands-on impression: This smartphone-meets-GPS-meets-media-player feels like a winner.

I'm now in my Barcelona hotel after coming up from Madrid in the bullet train (wheeee!) I will be covering the Mobile World Congress 2009, which will be loaded with new products. Stay tuned.