The first ever touch-screen phone was the IBM Simon Personal Communicator, which was released in 1993. It was invented by a team of engineers at IBM, led by Frank Canova. The Simon had a resistive touchscreen, which meant that users had to press down on the screen with a stylus in order to register their input.
Although the Simon was the first touchscreen phone, it was not a commercial success. It was expensive and had a number of technical problems. However, it paved the way for future touchscreen phones, such as the LG Prada, which was released in 2007, and the iPhone, which was released in 2007.
Today, touchscreen phones are the norm, and they are used by billions of people around the world. The invention of the touchscreen phone has revolutionized the way we communicate and interact with the world around us.

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