Rationale behind long touch latency on Android [closed]

1. What is the latency of a touch screen?
2. How do you do a long press on Android?

What is the latency of a touch screen?

We measure the touch-to-display response time, which refers to the time gap, or latency, between a tap on the device's screen and the visible reaction to that tap on the screen.

How do you do a long press on Android?

A Long Press refers to pressing a physical button or tap a virtual button on a touchscreen and holding it down for a second or two. Employed on touchscreens, smartphones, tablets, and smartwatches, the long press or long tap increases the user interface's flexibility.