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MIAMI (CBSMiami/AP)  — The core of Google’s annual conference is its Android system that powers 80 percent of the world’s smartphones.

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Google’s three-day conference, called Google I/O, starts Wednesday in Mountain View, California.

Google gives Android away for free to device makers. Google designs it to highlight its search engine, maps and other features, giving the company more opportunities to sell the digital ads that generate most of its revenue.

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The bias toward Google’s own services is now the subject of antitrust investigation by European regulators trying to determine whether the company is stifling competition in the increasingly important mobile market.

Besides updates for the phone, Google is likely to unveil new features coming to other gadgets such as Android Wear smartwatches and possibly Android TV streaming devices.

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