I really hope you're trolling. Are you not even aware that before Siri was even bought by Apple(no, they didn't invent it, they bought
it) Google had something called Voice Actions? Play music, get turn-by-turn navigation, dictate emails, text messages and more just by tapping the microphone and saying a keyword.
Not only that, but the almighty Apple killed features in Siri once they integrated it, can't keep the service up(making people pay for a beta product is so
much fun, guys) and took Siri away from the iPhone 4, which was capable of running it and had more features before they made people buy a new phone just to get it back.
On top of all of the above, Google Now(not shown, but awesome feature) is smarter because you don't actually have to ask, it(with your permission) uses information you're choosing to give it. That means a home-grown feature Google made beats the crap out of something Apple bought, crippled and made you pay extra money to get.
Oh and even really low-end Android phones(with specs like the iPhone 3GS) have had free
turn-by-turn voice-guided navigation for years. Got anything below a 4S? Tough, Apple's gonna make you upgrade to get it.