I have a Samsung Galaxy s5 (just got it yesterday) - and the S Voice does not open with any voice commands. I can double click the home key, and it opens and works. But if I am in my home screen (or anywhere else) and say "Hi Galaxy"' nothing happens. Even when I customize my own personal Wake Up message, it still doesn't wake up. I took my phone to Verizon today and Best Buy and talked to their Samsung people and NO ONE knew how to fix it. They even tried to do it on their own Samsung phones, and it just doesn't work. Frustrating to have a function on a phone that doesn't even work.
