I got this rating / review during a call when I was trying to turn off my Bluetooth. the screen got dark. I have no idea what the reply is on about hahaha. Again, when the prompt window with "rate the app" came, the display got dark and I can't push any button. When the call ended I did se the prompt msg and conclusion is that is the reason for the bug. And go update your own phone! Jez everything is up to date.