Cell Phone History - The Evolution of the Cell Phone
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Cell Phone History - The Evolution of the Cell Phone
Cell phones have become a part of mainstream culture. Recently they have become more affordable and accomplish much more than making and receiving calls. Along with the growing popularity there is also growing concerns about safety and health. In this paper we will address cell phone history and how they have evolved. We will discuss health concerns such as tumors and talking while driving. Finally, we will talk about all of the technology that cell phones can accomplish such as receiving Email and buying stocks.
In 1921 the Detroit Michigan Police Department first used mobile radio in a vehicle. Digital wireless and cellular roots started in the 1940s. In the 1940s new frequencies between 30 and 40 MHz were available. There was an increase of availability in channels which police systems were encouraged to use. Mobile units were available within private companies, individuals, and public agencies. In St. Louis, 1945 the first mobile telephone system in the US was introduced. Along the highway between New York and Boston a Public mobile system carried greater frequency distance in 1947. In 1n 1949, the FFC authorized separate radio channels to common carriers. A new system was developed with automatic channel selection in 1964. With this new system each call allowed customers to dial for themselves and it eliminated the need to push-to-talk operation. In 1975, in Chicago, AT&T was authorized to develop a cellular system. After this AT&T and Bell labs work with other cellular vendors to develop their cellular phones. Their phones were made so consumers would have the quality products available to use on cellular networks. There are many reasons why the mobile wireless has not progressed further in the last 60 years, this is because of cautiousness and federal regulation. The Federal Communications Commission controlled frequency availability. Their regulations and unresponsiveness had the most significant factors hindering radiotelephone development. The Federal Communication Commission delayed the technology in America by ten years.
Brain tumors and eye cancer are two health concerns of cell phones that are currently under investigation. Many people have heard rumors about whether or not cell phones are responsible for these health problems, but answers never seem to be found.
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Cell Phone New System St. Louis Health Concerns Evolution Telephone System Growing Popularity Cellular Phones
Researchers have recently conducted a study to find out if brain tumors were related to cell phone use. The researchers did not find a direct link with the brain tumors and cell phones. Although studies are still taking place to find out for sure, the conclusion seems to be that cell phones do not cause brain tumors. As for eye cancer, scientist have found that people who use cell phones regularly are three times more likely to develop eye cancer. This study is also still under investigation but many facts lead to the conclusion that cell phones do increase a persons risk of developing eye cancer.
RF Power Deposition From A PCS Cell Phone Inside Your Head.
Colors varying from blue to red illustrate the SAR when the phone is placed against the head. The power is in dB and is relative to the point of the model where the maximum SAR occurs. In this case, the head.
Driving while talking on a cell phone seems to be more dangerous than any of the diseases cell phones are accused of causing. Many states are banning the use of cell phones while driving. New York became the first state to ban cell phones while driving and many states are expected to follow.
Cellular technology is a fairly new technology. Since its invention in 1968 it has greatly improved. Cellular technology was developed to take care of the frequencies that were being transmitted over the airways. The FCC turned to the telephone companies to come up with a solution to the problem and AT&T came up with a feasible solution. They suggested that a system of towers or beacons be created. Each tower would carry a certain frequency for a certain radius. However, the signal or frequency could be used by different users simultaneously. As the person trying to make the cellular call leaves the radius of that tower, another tower picks up the signal and changes the frequency of the call. Thus there is not overlapping of people’ phone calls because the signal is constantly moving between stations. The first towers were built in Newark and Philadelphia and proved to be a success.
The latest technology in cellular telephones is the development of the 2.5 GHz phone. This phone cannot only place phone calls, it can also browse the web, send emails, and act as a personal data organizer. With this technology many products have been turned into one simple little phone. And I do mean little; these cellular telephones weigh mere ounces. They are capable of multitasking also. You can store phone number as you speak through voice recognition. These phones come with touch sensitive screens, color displays, hundreds of ringers, and some are even being built with built in digital cameras. Speakerphone is also a new feature of these phones. Now you can speak out loud from a farther distance in a personal space and the receiver will have pure and clear sound. These are all advantages of using a much higher frequency to transfer the digital signals created by the phone. Compared to the phones of the 70’s at 75 MHz, to today’s 2.5 GHz, the signal is nearly three times are strong. That means that your signal is coming through the receiver three times clearer than it was just 30 years ago. Just think of what tomorrow’s technology will bring. For a look into tomorrow’s technology click here.
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The History and Evolution of Cell Phones
By: Amanda Ray Filed under: Gaming & Technology
January 22, 2015
Could you survive without your mobile phone? Cell phones have become incredibly advanced in a relatively short amount of time, and the possibilities for the future are seemingly endless.
In The Beginning
Many of the early cell phones were considered to be “car phones,” as they were too large and cumbersome to carry around in a pocket or purse. However, in 1983, the Motorola DynaTAC 8000x arrived on the market. Though huge by today’s standards, it was considered the first truly mobile phone because it was small enough to carry.
The phone, though incredibly expensive, became a pop culture symbol, showing up on everyone from Gordon Gekko in the movie Wall Street, to high school heartbreaker, Zack Morris, in Saved by the Bell.
“You always have the trendsetters who are not afraid of trying new things and then everyone else follows,” says Patricia Grullon, an Industrial Design instructor at The Art Institute of Fort Lauderdale. “These trendsetters are key to make any product popular.”
However, cell phone use hadn’t spread to the general public yet.
“They were primarily used in the sales and business world, but not often for personal use like you see today,” says Kreg Jones, an industrial designer and Industrial Design instructor at The Art Institute of Philadelphia.
Though the DynaTac and subsequent models were smaller, mobile, and ultimately cooler, they still had their faults. Bulky, luggable models like the Nokia Mobira Talkman and the Motorola 2900 Bag Phone had longer battery lives and more talk time, making them more popular at the time. As the technology advanced, cell phone companies figured out how to pack all the features their customers wanted into a smaller, portable, more affordable model.
A Shifting Purpose
Early cell phones were just for talking. Gradually, features like voicemail were added, but the main purpose was talk. Eventually, cell phone manufacturers began to realize that they could integrate other technologies into their phone and expand its features. The earliest smartphones let users access email, and use the phone as a fax machine, pager, and address book.
In recent years, the purpose of the cell phone has shifted from a verbal communication tool to a multimedia tool, often adopting the name “mobile device” rather than being called a phone at all. We now use our cell phones more for surfing the web, checking email, snapping photos, and updating our social media status than actually placing calls.
“Rapidly expanding software titles, better screen resolution, and constantly improved interface make cell phones easier to navigate, and more fun to use. Add to that an expanding capacity that can hold as much memory as a computer would just a few years ago, and you can see why it’s an exploding market,” Grullon says.
The cell phones of today are also replacing our other gadgets, such as cameras and video cameras. When cameras were first introduced on phones, the images were low quality and the feature was considered to just be an extra.
“Now, we're seeing a very fast shift to where consumers don't even bother carrying their point-and-shoot cameras anymore, and just use their cell phones,” says Jamie Lendino, a tech journalist and senior mobile analyst for PCMag.com.
Modern day smartphones — the Apple iPhone in particular — changed everything that consumers expect from their phones. The app market has transformed the phone into a virtual toolbox with a solution for almost every need.
It’s not just the technology of the cell phone that has changed over time, the physical design has also gone through a rollercoaster of changes. Original car phones and bag phones were as large as modern day computers and just as heavy.
“Like computers, the cell phone over time has become drastically smaller,” Jones says. He recalls reviewing focus group results while working with Ericsson GE Mobile in the mid-90s. “Customer research showed that the phone was so small that the user interface was unacceptable. Though the phone may have functioned perfectly well, their opinion was partially driven by the perception that the phone was simply too small.”
Eventually, customers’ perceptions shifted and they demanded a smaller, sleeker cell phone.
Just in recent years, cell phone designs have actually started to become larger and simpler, making room for a larger screen and less buttons. Because phones have become mobile media devices, the most desirable aspect is a large, clear, high-definition screen for optimal web viewing. Even the keyboard is being taken away, replaced by a touch screen keyboard that only comes out when you need it. The most obvious example of this is the Apple iPhone and subsequent competitors like the Droid models.
Future of the Cell Phone
The cell phone has changed and developed so rapidly in the past decade that it seems as though almost anything you can imagine is possible for the future. According to Jones, the convergence of all our tech gadgets into one mobile device will continue to advance. He anticipates that “the majority of the hardware and the software can be moved to ‘the cloud’ and the product will mainly be comprised of the input and the display.”
Lendino expects that the smartphone will eventually completely take over the market.
“Within a few more years, I expect regular cell phones to disappear entirely. We may not even call smartphones ‘smart’ anymore and just drop the term altogether, the way we stopped saying ‘color TV’ and ‘hi-fi stereo’,” he says.
Grullon believes that cell phones of the future will be adapted to appeal more to our emotional senses.
“I believe in the future, cell phones will become even more naturally in sync with our biological reflexes and processes such as eye movement, thought processes, kinesthetic, cultural preferences,” she says.
It’s not just about how we will change cell phone, Grullon says.
“The question is, how will the cell phone change us?”
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