In this video, I compare the iPhone's Siri to Android's Voice Actions to Windows Phone's Tellme. I do a couple of tests ranging from asking the phones for weather to asking for directions or an answer to a question.
The phones I used to test each platforms voice assistant were the iPhone 4S (Siri), the Samsung Galaxy Nexus (Voice Actions), and the HTC HD7 (TellMe). The iPhone is running iOS 5.1, the Galaxy Nexus is running Android 4.0.2 Ice Cream Sandwich, and the HD7 is running Windows Phone Mango 7.5.
So which mobile operating system's (iOS vs Android vs Windows Phone) voice command is actually performs the best? Watch the video to find out!