It's got all the makings of a true classic - a whopping 4-inch screen, a 1GHz Snapdragon processor and it's rocking Android with a cool overlay.
In short, since we first heard about it at the tail end of 2009, we've been excited to see if it can be the handset to return Sony Ericsson to the sharp end of the mobile phone game.
It's odd, but given the massive screen on the phone, the first thing you notice when looking at the Xperia X10 is not the screen - on our black review model the main thing is simply how shiny it is.
It's an understated phone, with a sharp, angular design and minimal buttons - in short, it looks like the kind of high-end handset we'd expect from one of the leading mobile manufacturers.
The screen dominates most of the front of the Xperia X10, and there are three buttons at the bottom, denoted as menu, home and back. (Albeit with some indecipherable symbols - what's wrong with actually writing 'Menu' and 'Home' on there?)
Between each of the front buttons there's a little LED, which glows brightly whenever the phone is used - a nice touch that adds a premium feel, although they can get a little annoying, especially in the dark - and it seems there's no way to turn them off.
