Well-designed mild curve
When the phone size reaches 5.7-inch, how it feels in your hand is the
main design factor to be considered. For any size change, the phone
body and interface, finger and palm touch shall be considered again.
Except for the static feeling, the dynamic friction with the palm in use
shall also be considered. Combined with the spray quality of phone,
material damping, repeated modification, this mild and elegant curve
can be made to make holding and using it quite enjoyable.