ContributorNetwork - COMMENTARY | You weren't charged it when they rang your smartphone up at the register, and your receipt won't have any mention of it. But if you bought an Android smartphone in the last year or so, odds are you paid Microsoft $5 for the privilege of using Android, according to Citi analyst Walter Pritchard as quoted in Business Insider. Meanwhile, Google stands to collect about a billion dollars a year from Apple on account of people who buy the iPhone, according to John Paczkowski of AllThingsD.