galaxy s4 wake up with speech

[Android Question]

i recently bought a Samsung Galaxy s4 and saying i love it would be an understatement.
however i was messing around with some features i didnt know about and i happen to come accross the s-voices wake up command section and i tried it out by locking my phone so the screen went blank. then i said my wake up command while my phone was asleep to see if it would wake up without me touching it. i looked this up online and i figured out that the Galaxy s3 does this "wake up with speech while the device is asleep" function. but i couldnt find anything like that for the galaxy s4, can someone please tell me what the hell im doing wrong or if Samsung included this function for Galaxy s4?

 

[Mr. Lucky]

From page 198 of the i337 GS4 User Manual:
Wake up S Voice by saying, "Hi Galaxy"

 

[Shotgun84]

Hello and welcome to the forum

The phones don't come with a physical manual these days (to save on paper I guess) so I'd you need the manual for further reference you can download it from here

GT-I9505 - DOWNLOADS | SUPPORT | SAMSUNG UK

It says it's for the i9505 but it should be relevant to all the models

 

[Mr. Lucky]

Good point, and one that I overlooked. I forget where I downloaded it from, but the AT&T variant is named, "ATT_SGH-i337_English_User_Manual_MDB_F3.pdf." Plug that name into your search engine of choice (w/o the quotes) and you should have several sources to choose from.