Ever been curious about that piece of software called Firefox OS but couldn't really justify buying even the cheapest smartphone for it? Do you have an Android phone? If you said yes to both, then this might be your lucky day, depending on how you look at it. A new experiment coming straight from Mozilla's developers now gives curious users a chance to play with Firefox OS. Except, you aren't really going to be the full experience, as the b2gdroid app is basically a Firefox OS Android homescreen replacement.