Should only take about 3 seconds for the option to popup, however, when I first played with it, I could not get it to show up the first couple tries. What I did was count and if I got to 5 seconds, I released the button and let the screen go to sleep. I then woke it back up, unlocked it and repeated the process. After about 4 times, when I got to 3 seconds I felt a brief phone vibration and the menu showed up. I repeated this and again, 3 seconds the menu popped up.
Now it seems to function as expected everytime I attempt it.
Strange, but it worked on mine.
If my post or someone else's answered your question please mark it an Accepted Solution.
Keep in mind, like you, I am a Sprint subscriber. I am in no way employed by Sprint in any sense. I just know stuff.