Android is so outrageously popular (over 1 billion device activations), it's hard to belive it has only been five short years since the first Android-powered phone went on sale. Here's a visual walk through the most important milestones in Android's first half-decade, starting with the humble T-Mobile G1 (aka HTC Dream) slider phone with physical keyboard that started it all.

This story, "Infographic: Five years of Android milestones" was originally published by TechHive .