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This is today's iPad. Notice two main characteristics: The set of four main icons on the bottom of the screen, and the grid of app icons in the main screen.
The iPad, of course, can have up to six icons in the main app section. Remember this when we get back to 1993.
Today's iPad mini
For completion's sake, let's also look at today's iPad mini — which is identical to today's iPad. On the iPad mini, you can also have up to six main application icons.
(Image: Wikimedia Commons)
2007: The original iPhone
It's 2007. George W Bush is president, the housing bubble hasn't collapsed yet, Lehman Brothers is still flying high, and Apple introduces the exciting new iPhone, complete with an interface that has four main application icons, and a grid for secondary icons.