We said when we tested the beta of Cortana for Android that it wasn't that useful when you had to open the app and touch the microphone to voice a query. Microsoft later fixed that in time for the public launch, but an update this week took us right back to square one as the company removed the 'Hey Cortana' feature in the U.S. market.
Engadget reports that the feature apparently conflicted with 'Ok Google' in a way that could render the phone unable for many tasks – including making phone calls.
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