Nowadays about all of the people use a smartphone of a different brand. nowadays Ever smartphone has a touchscreen system. The touchscreen is an electronic input display system that works by one or more fingers. It used instead of a button. This is a new technology that uses smartphones. The touch screen displays stay on mobile.
You can control everything of mobile with touch by finger. There is some touch screen that is used with a particular pen. When the touch screen first came out, it worked as a knob. But, for some years it works easily by finger. Users can control all device systems by touchscreen.