The question of what was the first touch screen phone requires a nuanced answer, as it depends heavily on how one defines a "phone" and the specific technology used. While modern smartphones are synonymous with touch interaction, the journey to that point involved several pioneering devices that experimented with this technology long before the iPhone popularized it. To understand the origin, we must look at devices that combined telephony with a digitizing panel, moving away from physical keyboards and styluses.
Early Touch Technologies and Precursors
Before examining specific phone models, it is essential to understand the underlying technology that made touchscreens possible. The groundwork was laid in the 1960s and 1970s with inventions like E.A. Johnson's capacitive touch screen in 1965 and the resistive touch screen developed by G. Samuel Hurst in 1971. These technologies were initially too expensive and fragile for consumer electronics, finding their first major use in industrial settings and early computers. The concept of interacting with a visual interface directly was revolutionary, but integrating it into a portable communication device presented significant engineering challenges.
The IBM Simon: A Revolutionary Prototype
Features and Significance
When discussing the history of mobile communication, the IBM Simon Personal Communicator often emerges as the primary candidate for the first true touch screen phone. Unveiled in 1992 and released to the public in 1994, Simon was far ahead of its time. It did not merely add touch to a phone; it was a complete handheld computer that happened to make calls. Simon combined a cellular phone, a pager, a fax, and a PDA into a single device, running on the now-obsolete DOS operating system.
What distinguished Simon was its use of a monochrome LCD screen that responded to a stylus. Users could navigate through a suite of applications—including an address book, calendar, notepad, and email client—by tapping icons on the screen. Although it required a stylus and lacked the fluidity of modern touch interfaces, Simon established the fundamental paradigm of interacting with a phone through a direct touch interface. It proved that a full computer interface could exist on a mobile device, setting a precedent that would be followed decades later.
Competing Technologies: The Rise of Resistive Screens
Following Simon, the late 1990s and early 2000s saw the proliferation of devices utilizing resistive touch technology, which was cheaper and more durable than the capacitive screens used in Simon. These screens responded to pressure rather than the conductivity of a human finger, allowing for input via a stylus or a fingernail. Devices like the Palm Pilot and various Windows CE PDAs (Personal Digital Assistants) became common among business professionals who needed to manage contacts and schedules on the go.
While these devices were technically PDAs rather than phones, many models, such as the Handspring Treo, integrated telephony capabilities. These hybrids represented a significant step toward the modern smartphone. They were not the first touch screen phones, but they were the first to make the technology accessible and practical for the mass market, proving that consumers desired the interaction model beyond just business users.
The Refinement of Capacitive Touch
The limitations of resistive screens—such as the need for styluses and lower screen clarity—were eventually overcome by the widespread adoption of capacitive touch technology, which relies on the electrical properties of the human body. This technology, which had been used in Simon, became cheaper and more efficient. The introduction of the iPhone in 2007 is often mistakenly cited as the beginning of touch phones, but it was actually the moment when refined capacitive touch met a sophisticated operating system.
