We first saw the LG GF900 Crystal back at MWC 2009. Its LGs sexy phone with the transparent keyboard, which gives it a luxurious look. Those who have been captivated by it in the UK should be able to pick up the device in mid-May, since Carphone Warehouse has confirmed that they will be releasing the device then.

The GD900 features LG’s S-Class Touch UI, an 8-megapixel camera, Wi-Fi, HSDPA, TV-out and Dolby Mobile audio technology. The display and transparent sliding keypad should support multi-touch input and handwriting recognition as well.

The LG GD900 has just been unveiled, and the transparent keypad phone is a real looker. It’s definitely a first. The phone is just 13mm thick and features a slide out keypad that’s see through, knocking the iPhone dead as far as cool looks. It may be crystal clear, but the LG GD900 keypad will still glow if you are in the dark.

There aren’t many details about what’s going on inside other than HSDPA, but it’s due out Q2 this year. We do know that there’s a second camera on the front for video calls, and we’re guessing it’s also a music phone, with a proper headphone jack and may have Dolby Mobile inside.