i think "standby mode" is just another way of saying when the phone is just doing nothing (NOT in a phone call).

 

Yes, press it once and the screen will shut off and go into standby.

 

However, press and hold the button for a couple seconds and you get the list of options referenced in the manual.
Quick press = standby.
Press and hold = list of options.

 

It used to be that I could push the button once and the screen would go blank, even if I had something open. When messing around I found an option for what that button does, and changed it so 1 press goes back to the home screen, then the 2nd press will turn off the screen.

I want to change it back, but can't find it again. Does anyone know how to change it?

 

do you have spare parts app? if so there is a setting in there for this.

 

Yep, that's where it was. Everything is back to normal, thank you for your help!

 

de nada

 

"There's a setting for that"