Hi, when my phone vibrates, rotating the phone in different directions causes an unpleasant vibration and the vibration is not uniform. When the phone rotates, the vibration is disturbed. But there is no problem when the phone is fixed.
Would be difficult to diagnose the problem as the issue you're having is from its haptic feedback motors. We taking your device to a Samsung Experience Store near you where our techs can help figure out what's up!
