Android's been around quite a while at this point (Google's Android turned 12 last year), and even Android phones have been around well over a decade now. And while obviously hardware like the HTC Hero matters in terms of where the platform got its start, and ones like the original Moto DROID mark its real entry into the marketplace in a big way, we think there are phones (and even A tablet) that are less remembered or less appreciated for their impact on the larger ecosystem.

After, when's the last time you thought of the Galaxy S2, or the HTC One M7?

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