For the record, same thing happens with my Phone 2: so annoying, since it happens to turn on flashlight and/or move to the alarm settings. Even worst is the case when I have the device in my pocket and, i don’t why, the screen turns on and, due to rubbing movements within the pocket, PIN codes are randomly input, forcing me to wait some time before reactiving it.
I already reported the two issues to the Customer Support: as far as the pocket problem is concerned, they suggested me to turn on the prevention from accidental touch (in the gesture menu) but it was already on…
As far as the second issue, I was suggested to return the device to the assistance center.
So, apparently, the problem is far from beiong solved…