Hi, we have just acquired a Galaxy S3 Mini and have this problem........the button (sorry I dont know its tech name) on the left hand side of the HOME button continuously activates itself.....all on its own so it continually pops up with the menu for that button on the screen......goes out for about a second and comes back on. It has just started doing it. I have factory rebooted the phone but it still does it. Its draining the battery real quick and is bloo.y annoying. Thanks for reading and hope you can help.