The world's first 3D smartphone was unveiled at MWC - and it could be here in a matter of weeks.That is, if you want to pay for a sim-free model. Although if that arrives on these shores, there's no reason to think that contract phones will be far behind, Orange, T-Mobile and Three already confirming they will be selling it, but as yet, the networks aren't offering any details. Anyway, let's stick to what we know. The LG Optimus 3D is being offered by online retailer Xpansys right now, at least for pre-order. It ships from April 25th, with a price of £514.99 if you want to choose your own network.For that, you get all that 3D goodness, including the ability to capture and record images and videos in 3D with the dual five-megapixel camera. You can even upload your videos to a dedicated YouTube channel, as well as being able to connect LG Optimus 3D to any 3D TV or monitor via the HDMI cable.There's also what LG calls 'tri-dual' technology - dual-core, dual channel and dual-memory - for faster transfer of data between the dual-core and dual-memory, so faster browsing and viewing of video content. Android is the OS, 2.2 at launch, but upgradeable to 2.3, with a 4.3-inch 3D WVGA display and plus Wi-Fi and HSDPA connectivity.if all that appeals, get your pre-order in now or sit tight for a few weeks until the networks reveal their deals.