I have just started to notice my right ring finger has become very sore at the base where it meets the hand, precisely where a ring would go. I hold my iPhone 6 with my right hand just as I did my 4S.
I'm not sure exactly what's causing this pain but I imagine it has much to do with stretching to reach parts of the screen, which requires me to slide my pinky under the left side of the bottom of the phone where the headphone jack is and outstretch my thumb to reach the left side and top half of the screen, particularly the upper left.
Hopefully I get used to this, I have to keep switching back to my 4S intermittently to rest my hand.
I'm not sure exactly what's causing this pain but I imagine it has much to do with stretching to reach parts of the screen, which requires me to slide my pinky under the left side of the bottom of the phone where the headphone jack is and outstretch my thumb to reach the left side and top half of the screen, particularly the upper left.
Hopefully I get used to this, I have to keep switching back to my 4S intermittently to rest my hand.