As the classic refrain goes, three is a magic number -- and that certainly sums up LG's latest smartphone, the G3. It's fronted by an extra-sharp, 5.5-inch quad HD (2,560 x 1,440) display and wrapped in a smooth metal exterior. The G3's rear button controls offer a distinct twist on the smartphone interface, and you'll find both a very quick, laser-focused 13-megapixel camera as well as enough battery power to get you through the day. Want one? LG is more than willing to share the love, as it's giving away brand new G3s to three lucky Engadget readers this week. Oh, and you get to choose from one of the big four carriers (AT&T, Sprint, Verizon and T-Mobile) -- you probably won't have to switch networks just to get LG's latest. This particular giveaway is only for those in the US, but since the G3 is available worldwide, you can always pick one up. So, what are you waiting for? Head on down to the Rafflecopter widget below for your chance to win a G3 of your very own. It might just be your lucky day.