Touchscreen titans: HTC Touch Diamond vs 3G iPhone vs Sony Ericsson Xperia X1 vs Garmin nuvifone

Sony Ericsson Xperia X1
The 3G iPhone might be on its way, but many tech heads are getting hot and bothered about the Sony Ericsson Xperia X1. Set to be Sony Ericsson's first Windows Mobile handset, this touchscreen beauty has the potential to be a best seller and even make Apple sweat.

The X1 is no pay as you go puppy: this silver surfer boasts GPS, Wi-Fi and HSDPA. But that's not all -- hidden beneath the large screen is a slide-out Qwerty keypad that lets you tap out long emails with relative ease, a feature not even the HTC Touch Diamond or iPhone has.

But the dream phone may be just that -- Sony Ericsson has had a long line of problems with past smart phones and the X1 could find itself laden with issues too. Early reports suggest the interface isn't particularly smooth and feels clunky at times. Hopefully these are just initial prototype problems that will be ironed out soon.

The Sony Ericsson Xperia X1 is set to come out some time after June. Pricing has yet to be announced, but we assume it will come free with a monthly contract. If you'd like to get a better look, check out our video from the Mobile World Congress in Barcelona, or have a look at these close-up pics.

Update: Read our full Sony Ericsson Xperia X1 preview.