I had this button set to the default camera and decided to change the function the other day. After doing so, the button just stoped working no matter what I assigned to it. Then today I noticed after I just assinged the "Nothing" option to the right side button, that it now opens my contacts when pressed, and if pressed a second time, it will place a call th what ever contact in my contacts list that is highlighted.. Any ideas on what this is, could it be due to the new update maybe?