Android was gaining significant market share before Samsung emerged as the clear leader (see Motorola Droid, HTC Incredible, etc). There's tons of budget consumers carrying around sub $100 Android phones from Cricket, etc, many of which aren't Samsung devices. (I see probably 100 of those for every 1 Windows phone I see in the wild) Also, since you didn't delineate that you're referring to phones alone, I'm sure the tablets sold by Amazon and B&N are quite relevant.
