Galaxy Note 4 screen rotation is upside down

[AC Question]

I have a Samsung Note 4 with Android 6.0.1. lately, i noticed that when i rotate my phone in landscape mode, the display is shown upside down, even when using a camera. if i rotate it back to portrait mode, the display is ok. screen is upside down when i tilt the phone lanscaped. tried tapping, dropping my phone but still nothing. even calibrated the compass, still no success.. need help please!