I was successful in getting my sleep/wake button to work by fiddling with the mechanical button from the inside the iPhone. With the phone charged, you can orient the screen so you can see if/when the button works or does not. There is a small metal strip on the inside of the button that I could gently push up (towards the case) or down (away from the case), and this would allow the button to work -- but only intermittently. A permanent fix was achieved by slightly de-torquing (ie, un-screwing) the 2 teensy screws on the underside of the button mechanism. I really just "relieved the pressure" on these 2 screws, I did not really unscrew them at all. This is what worked for me. Good luck. Tom