In 1973 martin copper came up with Motorola. He took the project and let the people of New York see it. In 1977 the first cell phone was made in Chicago . When it first came out 2000 people was given a free trial. Then other places started to make cell phones. When to cell phone first came out they were huge. The people did not know how to make the phone any more compact. In 1988 the big company's started to make cell phones. There were over 54 places all over the world.
A pattern or picture used to represent the desktop surface (screen background) in a graphical user interface (GUI). Although many wallpaper options come with each operating system, third-party wallpaper files are also available, and any digital image can also be used as wallpaper. Many cellphones allow custom wallpapers for their screen backgrounds.
Years ago, someone who had too many sleepless nights programming must have thought it a great analogy because a screen desktop is vertical like a wall.