I've only read repeated reviews of Siri's finicky functionality. I have, however, used voice search to perform similar functions successfully.
I word it that way simply because I'm already seeing reviews on this device suggesting this feature is ripping Siri off. This functionality has existed and worked in Android long before Siri went online.
Should I use Siri instead of just assuming the reviews of laughable functionality are accurate?
Oh, I forgot to be on topic. Strange choice with any buttons, Samsung. The software buttons are there for a reason, and the screen is certainly big enough for them.