The iPhone 6, the smaller of the two phones, is the one that works best. Apple has gone back to rounded edges this time around, moving away from the dead straight sides of the previous four handsets ( the edges of the glass on the front are slightly curved, too) , and this works to create an impression that the phone is smaller than it is. It's comfortable to hold, doesn't feel too slippery in your hand ā an accusation I could level at theiPhone 5andiPhone 5sā and the 4.7in screen size feels just right.