If you live in the UK, and you've more than a passing interest in mobile phones (we're guessing that's a given), then you are probably already familiar with Expansys. The online store, known for its wide range of gadgets, and geek-friendly pricing, has kindly given us one of Samsung's Galaxy S III handsets to give away. For the uninitiated, all you have to do to win this piece of tech nobility is leave a comment below. Well, along with reading, and complying, with the rules set out below. Most importantly, on this occasion, you must be a UK resident. Good luck!