Smartphones have existed since 1993 but were initially only available to wealthy individuals due to their high price. The Nokia 9110 Communicator, BlackBerry 5810, and Palm Treo 600 helped advance the technology and introduce new ideas, but the iPhone, released in 2007, was one of the most influential due to its touchscreen, faster internet, and sleek design, selling hundreds of units. Today's smartphones have evolved into powerful mini computers, making daily life more convenient through various applications.