When Apple introduced the iPhone, smartphones often displayed rows of buttons or sported keyboards that folded or flipped out. Having to display so many buttons meant that the smartphone couldn’t display much of the screen. Fortunately, the iPhone changed the smartphone world when they introduced the touch screen interface. Instead of crowding the smartphone with physical buttons, the touch screen interface displayed a single screen that could offer virtual buttons.
Such virtual buttons meant the screen could adapt to the user’s needs. If you were typing an e-mail message, the virtual ...
