Screen capture in 4s

[Mary towle]

When I hold down the hold button to start the screen capture trick of hold button plus off button, Siri pops up. Is there a new way to screen capture in 4s?
Thanks!

 

[raqball]

Press both at same time... Works for me on 4S

 

[iphonewarrior]

Both buttons need to be pressed at the same time. Your devices screen will flash white if successful.