Q＆A
Q4.I don't know how to use smartphone.
A.At first let's learn how to use "home button". Both Android and iPhone have it. I can return to "a home screen" once when I push it.Then, let's learn it about a tap. I call operation to beat a screen lightly at a finger-tip "a tap". It becomes "the double tap" when I swat it and becomes "the long tap" twice when I push and hold it for a few seconds. Movement swinging a screen at a finger-tip is called "a flick" and uses it for a skip. I call that I open it across the screen with two fingers "pinch in", "a pinch out". I enlarge a screen by this operation and can reduce.
