Galaxy S5: S Voice does not activate using Voice command

Q: When screen is turned off, S Voice on Galaxy S5 does not work. What's the problem?

A: The implementation of S Voice on the Galaxy S5 has changed compared to Note 3 device. On Galaxy S5, S Voice launches by double pressing the Home Key after the screen is turned off.

If the Voice wake-up option is On, you can commence using S Voice via a voice command.

Note: In addition to the alternative method of tapping the "mic" icon twice on the S voice app to commence using the S Voice app.

 Note: Voice wake-up "On" means you can start using S Voice via a voice command after you have launches the S Voice by pressing the Home Key twice.