I have a Samsung Galaxy s5 phone. The screen rotation no longer works. It is green, but nothing happens when I rotate my phone. I've tried simple solutions like restarting the phone, sliding the button off and on. I've read that I should start my phone in safe mode and check app settings to see if they have the screen rotation turned off. I know how to turn on the phone to safe mode, but I don't know how to check individual apps to see which app is the problem. I'm not tech savvy at all. Thanks.