It says on the screen, very clearly, that you should hold the phone in your right hand. However, I noticed getting more points when holding it in my left hand. Also, the screen-dancer's left hand is usually highlighted. Now I'm confused.
The only video I found of people dancing with their phones in their hands is this one, but I don't know if that's really their left hand or their right hand.
Moreover, do I do with my left hand what the screen-dancer does with her right hand, or opposite? There are some instructions but I don't get them.
The whole mirror thing is confusing me.
Is there a simple way to think about this?