[Mark_Twain007]

After I updated to 8.1 on my Icon, I noticed that sometime when i press the power button nothing happens. I will wait a couple of seconds and nothing show, but then if I hit it again it works just fine. Anybody else having this problem or know how to fix it. it seems to happen most when I haven't been using my phone for a while.

[anon(7900571)]

Hey , read this article :- Some Nokia Lumia Icon users report unresponsive power button after Windows Phone 8.1 update | Windows Phone Central
With final build and firmware update from Nokia (cyan update ) these issues will be resolved

[Justinian84]

I have a 930 with Cyan and this is still happening... sigh

[Sushant Butta]

I am also facing the same issue in Lumia 620. I have to press 2-3 times to unlock-lock phone. For locking I have installed the application with a tile on home screen. So I just press the tile to lock the phone, instead of power button.