Because I wasn’t sure about this myself, I began running a search on the web about the history of touch screen (smart)phones. Of course, the iPhone (released in 2007) is not the first of its kind, and HTC may not have produced the first one either. It’s actually pretty interesting to see that this goes a whole way back, even further that I could imagine. What follows is not a full research paper, but some highlights of what I found.
PDA vs smartphone
The first thing I wondered: what is the difference between a PDA and a smartphone? But it’s pretty vague to me. Basically, a PDA is not supposed to have a phone feature, where a smartphone does. So a smartphone is a mobile phone with more advanced computing abilities. The first one was launched by IBM (and BellSouth) in 1993, and was called Simon. The term PDA (personal digital assistant) was introduced by Apple in 1992. It referred to their platform Apple Newton (released as the MessagePad in 1993).
PDA vs tablets
The difference between a tablet computer, tablet PC and a PDA isn’t that big either. A PDA is a small handheld, where tablets have a bigger screen. A tablet computer is a full touch screen device, that uses a stylus or your fingers to input data. A tablet PC is more or less the same, but is a full functional computer. More about touch screens, later.
Apple, Android and BlackBerry
- The iPad is the second tablet computer from Apple, after the Newton MessagePad.
- The iPhone is a smartphone (even though some blogs may disagree).
- The iPod Touch might be considered as a PDA (but that’s my conclusion).
- Android itself is only an operating system, originally built for any mobile device. It’s made popular thanks to manufacturers like HTC, who is using it for some of their smartphones.
- The BlackBerry OS is designed by RIM, to run on smartphones (and email enabled mobile phones).
Feature phone
On a side note. There is also a difference between a feature phone and a smartphone. The term describes a low-end mobile phone, like the one most people nowadays are used to. It has limited functionality, usually a custom OS, but can run applications based on Java ME or BREW.
Touch screens
So what about touch screens? Apparently, they were already researched in the 1940s. But the first touch sensor was developed in the 1970s. It is difficult to find the first touch screen mobile phone (notice I’m not looking for the first touch screen device). The problem lies in the definition. Touch screen is considered to be a screen operated by your fingers (electrostatic, capacitive touch screen, which is multi-touch). Where a pen-enabled screen is a also a touch screen, but operated by a pen or stylus (pressure sensitive, resistive touch screen). And besides from these two you have other methods using infrared, acoustic waves, and so on. Of course there is a difference between all these technologies, but the basic concept remains the same. It’s a screen you touch (whether it is with a finger, pen or sausage). So I’m going to say that a touch screen device, is any device that you operate by touching the display.
The first touch screen mobile phone
Sure, we all remember the popular iPAQ, produced by HTC for Compaq (later HP). But that device wasn’t introduced until 2000. I think I might have mentioned the first smartphone with a touch screen already. So was Simon the first one on the market back in 1993?