Apple could be planning to expand its voice command capabilities on the iPhone thanks to the pending acquisition of Siri, which makes an iPhone app that lets users perform Web searches by voice command. News that the company was acquired first appeared in an FTC premerger notification (PDF) and was confirmed by Silicon Alley Insider and others.

For those who have already played around with Google's search app for the iPhone, Siri's voice search capabilities will appear quite similar, but it goes further than just showing search results. With the app running, users can speak what they're looking for ("What movies are playing nearby?" or "Make a reservation at Francesca Forno for two people at 6pm"). The app will then determine what service you need—a basic list of search results, a Yelp review page, a reservation through OpenTable, etc.—and list out your options along with maps and other data.

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If Apple chooses to integrate Siri's technology into the iPhone OS, Google's Voice Search app would be redundant for many users—after all, if the OS can do it, why bother downloading an extra app that does less? That's probably the point. Considering that Apple may still have a Google Maps replacement in the wings, it certainly seems as if the company is making more of an effort to separate itself from Google, though both Apple and Google publicly insist that their relationship is still strong.