Google announces 400-million Android devices, 20bn app downloads

That massive number was announced by Google senior vice president of engineering Vic Gondutra at the internet giant's I/O conference.

This, says Gondutra, translates to one-million new Android device activations every day and around 12 device activations a second.

That's substantial growth even from the 700 000 activations Larry Page said the mobile OS was getting in January during an earnings conference call.

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