The iPhone 6S introduced 3D Touch, which allows the iPhone's screen to recognize how hard you're pressing it and respond in different ways.
6S wepụtara 3D Touch, nke na-enye ohere ihuenyo nke iPhone iji chọpụta otú ị siri na-arụ ya na ịzaghachi n'ụzọ dịgasị iche iche.