The Qualcomm QCP-2700, a mid 90s candybar style phone, and an iPhone 4S, a current production smartphone.

A mobile phone (also known as a cellular phone, cell phone and a hand phone) is a device that can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station.

In addition to telephony, modern mobile phones also support a wide variety of other services such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming and photography. Mobile phones that offer these and more general computing capabilities are referred to as smartphones.

The first hand-held mobile phone was demonstrated by Dr Martin Cooper of Motorola in 1973, using a handset weighing around 1 kg.^[1] In 1983, the DynaTAC 8000x was the first to be commercially available. In the twenty years from 1990 to 2011, worldwide mobile phone subscriptions grew from 12.4 million to over 5.6 billion, penetrating the developing economies and reaching the bottom of the economic pyramid.^[2][3][4][5]

History[link]

An evolution of mobile phones

Radiophones have a long and varied history going back to Reginald Fessenden's invention and shore-to-ship demonstration of radio telephony, through the Second World War with military use of radio telephony links and civil services in the 1950s.

The first mobile telephone call made from a car occurred in St. Louis, Missouri, USA on June 17, 1946, using the Bell System's Mobile Telephone Service.^[6] In 1956, the world’s first partly automatic car phone system, Mobile System A (MTA), was launched in Sweden. MTA phones were composed of vacuum tubes and relays, and had a weight of 40 kg.^[7][8]

Martin Cooper, a Motorola researcher and executive is considered to be the inventor of the first practical mobile phone for handheld use in a non-vehicle setting, after a long race against Bell Labs for the first portable mobile phone. Using a modern, if somewhat heavy portable handset, Cooper made the first call on a handheld mobile phone on April 3, 1973 to his rival, Dr. Joel S. Engel of Bell Labs.^[9][10] He stated "As I walked down the street while talking on the phone, sophisticated New Yorkers gaped at the sight of someone actually moving around while making a phone call. Remember that in 1973, there weren't cordless telephones or cellular phones. I made numerous calls, including one where I crossed the street while talking to a New York radio reporter - probably one of the more dangerous things I have ever done in my life."^[11] The new invention sold for an expensive price of $3,995 and weighed two pounds, receiving the nickname "the brick". The DynaTAc mobile phone cost $100m in development costs, and took over a decade to hit the market.^[12] When it did hit the market on March 6, 1983, the talk time was only a half an hour and took ten hours to charge. Despite the horrible battery life, weight, and low talk time, that didn't keep down consumer demands. The waiting lists were in thousands. ^{[13] [14]}

The world's first commercial automated cellular network was launched in Japan by NTT in 1979, initially in the metropolitan area of Tokyo. In 1981, this was followed by the simultaneous launch of the Nordic Mobile Telephone (NMT) system in Denmark, Finland, Norway and Sweden.^[15] The first 1G network launched in the USA was Chicago-based Ameritech in 1983 using the Motorola DynaTAC mobile phone. Several countries then followed in the early-to-mid 1980s including the UK, Mexico and Canada.

During the initial marketing of cell phones in the U.S., the Federal Communications Commission capped the number of providers for each city (market area) at two, making it complicated to travel to any extent with your cell service. [1]

In 1991, the second generation (2G) cellular technology was launched in Finland by Radiolinja on the GSM standard, which sparked competition in the sector as the new operators challenged the incumbent 1G network operators.

Ten years later, in 2001, the third generation (3G) was launched in Japan by NTT DoCoMo on the WCDMA standard.^[16] This was followed by 3.5G, 3G+ or turbo 3G enhancements based on the high-speed packet access (HSPA) family, allowing UMTS networks to have higher data transfer speeds and capacity.

Features[link]

A printed circuit board inside a Nokia 3210

All mobile phones have a number of features in common, but manufacturers also try to differentiate their own products by implementing additional functions to make them more attractive to consumers. This has led to great innovation in mobile phone development over the past 20 years.

The common components found on all phones are:

• A battery, providing the power source for the phone functions.
• An input mechanism to allow the user to interact with the phone. The most common input mechanism is a keypad, but touch screens are also found in some high-end smartphones.
• Basic mobile phone services to allow users to make calls and send text messages.
• All GSM phones use a SIM card to allow an account to be swapped among devices. Some CDMA devices also have a similar card called a R-UIM.
• Individual GSM, WCDMA, iDEN and some satellite phone devices are uniquely identified by an International Mobile Equipment Identity (IMEI) number.

Low-end mobile phones are often referred to as feature phones, and offer basic telephony. Handsets with more advanced computing ability through the use of native software applications became known as smartphones.

Several phone series have been introduced to address a given market segment, such as the RIM BlackBerry focusing on enterprise/corporate customer email needs; the SonyEricsson Walkman series of musicphones and Cybershot series of cameraphones; the Nokia Nseries of multimedia phones, the Palm Pre the HTC Dream and the Apple iPhone.

Text messaging[link]

The most commonly used data application on mobile phones is SMS text messaging. The first SMS text message was sent from a computer to a mobile phone in 1992 in the UK, while the first person-to-person SMS from phone to phone was sent in Finland in 1993.

The first mobile news service, delivered via SMS, was launched in Finland in 2000. Mobile news services are expanding with many organizations providing "on-demand" news services by SMS. Some also provide "instant" news pushed out by SMS.

SIM card[link]

Typical mobile phone SIM card

GSM feature phones require a small microchip called a Subscriber Identity Module or SIM Card, to function, while smartphones can be used without it. The SIM card is approximately the size of a small postage stamp and is usually placed underneath the battery in the rear of the unit. The SIM securely stores the service-subscriber key (IMSI) used to identify a subscriber on mobile telephony devices (such as mobile phones and computers). The SIM card allows users to change phones by simply removing the SIM card from one mobile phone and inserting it into another mobile phone or broadband telephony device.

The first SIM card was made in 1991 by Munich smart card maker Giesecke & Devrient for the Finnish wireless network operator Radiolinja. Giesecke & Devrient sold the first 300 SIM cards to Elisa (ex. Radiolinja).

Multi-card hybrid phones

A hybrid mobile phone can take more than one SIM card, even of different types. The SIM and RUIM cards can be mixed together, and some phones also support three or four SIMs.^[17][18]

From 2010 onwards they became popular in India and Indonesia and other emerging markets,^[19] attributed to the desire to obtain the lowest on-net calling rate. In Q3 2011, Nokia shipped 18 million of its low cost dual SIM phone range in an attempt to make up lost ground in the higher end smartphone market.^[20]

Mobile phone operators[link]

Global mobile phone subscribers per country from 1980-2009. The growth in users has been exponential since they were first made available.

The world's largest individual mobile operator by subscribers is China Mobile with over 500 million mobile phone subscribers.^[21] Over 50 mobile operators have over 10 million subscribers each, and over 150 mobile operators had at least one million subscribers by the end of 2009.^[22] In February 2010, there were 5.6 billion mobile phone subscribers, a number that is expected to grow.^[2]

Manufacturers[link]

Prior to 2010, Nokia was the market leader. However, during that year competition emerged in the Asia Pacific region with brands such as Micromax, Nexian, and i-Mobile and chipped away at Nokia's market share. Android powered smartphones also gained momentum across the region at the expense of Nokia. In India, their market share also dropped significantly to around 31 percent from 56 percent in the same period. Their share was displaced by Chinese and Indian vendors of low-end mobile phones.^[23]

In 2010 worldwide sales were 1.6 billion units, an increase of 31.8 percent from 2009. The top five manufacturers by market share were Nokia followed by Samsung, LG Electronics, ZTE and Apple. The last three replaced RIM, Sony Ericsson and Motorola who were previously among the top five list.^[24][25] Outside the top five a significant market share increase from 16.5 percent to 30.6 percent was achieved by many smaller and new brands.

In Q1 2011, Apple surpassed Nokia as the world's biggest handset vendor by revenue, as Nokia's market share dropped to 29 percent in Q1 2011, the lowest level since the late 1990s. In June 2011, Nokia announced lower expectations for sales and margin due to global competition in both low-and-high end markets.^[26] By Q2 2011, worldwide sales grew 16.5 percent to 428.7 million units.

In Q1 2012, based on Strategy Analytics, Samsung surpassed Nokia sold by 93.5 million units and 82.7 million units, respectively. Standard & Poor's has also downgraded Nokia to 'junk' status at BB+/B with negative outlook due to high loss and still declined with growth of Lumia smartphones was not sufficient to offset a rapid decline in revenue from Symbian-based smartphones over the next few quarters.^[27]

• Note: Vendor shipments are branded shipments and exclude OEM sales for all vendors

Other manufacturers outside the top five are Research In Motion Ltd. (RIM), HTC Corporation, Motorola, Huawei, Sony Ericsson. Smaller players include Audiovox (now UTStarcom), BenQ-Siemens, CECT, Fujitsu, Just5, Kyocera, Mitsubishi Electric, NEC, Panasonic, Palm, Pantech Wireless Inc., Philips, Qualcomm Inc., Sagem, Sanyo, Sharp, Sierra Wireless, SK Teletech, Soutec, T&A Alcatel, Trium, Toshiba, and Vidalco.

Use of mobile phones[link]

In general[link]

Mobile phone subscribers per 100 inhabitants 1997–2007

Mobile phones are used for a variety of purposes, including keeping in touch with family members, conducting business, and having access to a telephone in the event of an emergency. Some people carry more than one cell phone for different purposes, such as for business and personal use. Multiple SIM cards may also be used to take advantage of the benefits of different calling plans—a particular plan might provide cheaper local calls, long-distance calls, international calls, or roaming. The mobile phone has also been used in a variety of diverse contexts in society, for example:

• A study by Motorola found that one in ten cell phone subscribers have a second phone that often is kept secret from other family members. These phones may be used to engage in activities including extramarital affairs or clandestine business dealings.^[30]
• Some organizations assist victims of domestic violence by providing mobile phones for use in emergencies. They are often refurbished phones.^[31]
• The advent of widespread text messaging has resulted in the cell phone novel; the first literary genre to emerge from the cellular age via text messaging to a website that collects the novels as a whole.^[32]
• Mobile telephony also facilitates activism and public journalism being explored by Reuters and Yahoo!^[33] and small independent news companies such as Jasmine News in Sri Lanka.

A cellphone repair kiosk in Bangalore, India

• The United Nations reported that mobile phones have spread faster than any other technology and can improve the livelihood of the poorest people in developing countries by providing access to information in places where landlines or the Internet are not available, especially in the least developed countries. Use of mobile phones also spawns a wealth of micro-enterprises, by providing work, such as selling airtime on the streets and repairing or refurbishing handsets.^[34]
• In Mali and other African countries, people travel from village to village to let friends and relatives know about weddings, births and other events, which is avoided if the villages are within mobile phone coverage areas. In many African countries, mobile phone coverage is greater than land line penetration, so most people own a mobile phone. In the smaller villages without electricity, phones are recharged using a solar panel or motorcycle battery.^[35]
• The TV industry has recently started using mobile phones to drive live TV viewing through mobile apps, advertising, social tv, and mobile TV.^[36] 86% of Americans use their mobile phone while watching TV.
• In parts of the world, mobile phone sharing is common. It is prevalent in urban India, as families and groups of friends often share one or more mobiles among their members. There are obvious economic benefits, but often familial customs and traditional gender roles play a part.^[37] For example, in Burkina Faso, it is not uncommon for a village to have access to only one mobile phone. The phone is typically owned by a person who is not natively from the village, such as a teacher or missionary, but it is expected that other members of the village are allowed to use the cell phone to make necessary calls.^[38]

For distributing content[link]

In 1998, one of the first examples of distributing and selling media content through the mobile phone was the sale of ringtones by Radiolinja in Finland. Soon afterwards, other media content appeared such as news, video games, jokes, horoscopes, TV content and advertising. Most early content for mobile tended to be copies of legacy media, such as the banner advertisement or the TV news highlight video clip. Recently, unique content for mobile has been emerging, from the ringing tones and ringback tones in music to "mobisodes," video content that has been produced exclusively for mobile phones.

In 2006, the total value of mobile-phone-paid media content exceeded Internet-paid media content and was worth 31 billion dollars.^[39] The value of music on phones was worth 9.3 billion dollars in 2007 and gaming was worth over 5 billion dollars in 2007.^[40]

The advent of media on the mobile phone has also produced the opportunity to identify and track alpha users or hubs, the most influential members of any social community. AMF Ventures measured in 2007 the relative accuracy of three mass media, and found that audience measures on mobile were nine times more accurate than on the Internet and 90 times more accurate than on TV.^{[original research?]}

Whilst driving[link]

Texting in stop-and-go traffic in New York City

Mobile phone use while driving is common but controversial. Being distracted while operating a motor vehicle has been shown to increase the risk of accident. Because of this, many jurisdictions prohibit the use of mobile phones while driving. Egypt, Israel, Japan, Portugal and Singapore ban both handheld and hands-free use of a mobile phone; others —including the UK, France, and many U.S. states—ban handheld phone use only, allowing hands-free use.

Due to the increasing complexity of mobile phones, they are often more like mobile computers in their available uses. This has introduced additional difficulties for law enforcement officials in distinguishing one usage from another as drivers use their devices. This is more apparent in those countries which ban both handheld and hands-free usage, rather those who have banned handheld use only, as officials cannot easily tell which function of the mobile phone is being used simply by looking at the driver. This can lead to drivers being stopped for using their device illegally on a phone call when, in fact, they were using the device for a legal purpose such as the phone's incorporated controls for car stereo or satnav.

A recently published study has reviewed the incidence of mobile phone use while cycling and its effects on behaviour and safety.^[41]

In schools[link]

Some schools limit or restrict the use of mobile phones. Schools set restrictions on the use of mobile phones because of the use of cell phones for cheating on tests, harassment and bullying, causing threats to the schools security, distractions to the students, and facilitating gossip and other social activity in school. Many mobile phones are banned in school locker room facilities, public restrooms and swimming pools due to the built-in cameras that most phones now feature.

Mobile banking and payments[link]

In many countries, mobile phones are used to provide mobile banking services, which may include the ability to transfer cash payments by secure SMS text message. Kenya's M-PESA mobile banking service, for example, allows customers of the mobile phone operator Safaricom to hold cash balances which are recorded on their SIM cards. Cash may be deposited or withdrawn from M-PESA accounts at Safaricom retail outlets located throughout the country, and may be transferred electronically from person to person as well as used to pay bills to companies.

Branchless banking has also been successful in South Africa and Philippines. A pilot project in Bali was launched in 2011 by the International Finance Corporation and an Indonesian bank Bank Mandiri.^[42]

Another application of mobile banking technology is Zidisha, a US-based nonprofit microlending platform that allows residents of developing countries to raise small business loans from web users worldwide. Zidisha uses mobile banking for loan disbursements and repayments, transferring funds from lenders in the United States to the borrowers in rural Africa using the internet and mobile phones.^[43]

Mobile payments were first trialled in Finland in 1998 when two Coca-Cola vending machines in Espoo were enabled to work with SMS payments. Eventually, the idea spread and in 1999 the Philippines launched the first commercial mobile payments systems, on the mobile operators Globe and Smart.

Some mobile phone can make mobile payments via direct mobile billing schemes or through contactless payments if the phone and point of sale support near field communication (NFC).^[44] This requires the co-operation of manufacturers, network operators and retail merchants to enable contactless payments through NFC-equipped mobile phones.^[45][46][47]

Tracking and privacy[link]

Mobile phones are also commonly used to collect location data. While the phone is turned on, the geographical location of a mobile phone can be determined easily (whether it is being used or not), using a technique known as multilateration to calculate the differences in time for a signal to travel from the cell phone to each of several cell towers near the owner of the phone.^[48][49]

The movements of a mobile phone user can be tracked by their service provider and, if desired, by law enforcement agencies and their government. Both the SIM card and the handset can be tracked.^[50]

China has proposed using this technology to track commuting patterns of Beijing city residents.^[51] In the UK and US, law enforcement and intelligence services use mobiles to perform surveillance. They possess technology to activate the microphones in cell phones remotely in order to listen to conversations that take place near to the person who holds the phone.^[52][53]

Health effects[link]

The effect mobile phone radiation has on human health is the subject of recent interest and study, as a result of the enormous increase in mobile phone usage throughout the world. Mobile phones use electromagnetic radiation in the microwave range, which some believe may be harmful to human health. A large body of research exists, both epidemiological and experimental, in non-human animals and in humans, of which the majority shows no definite causative relationship between exposure to mobile phones and harmful biological effects in humans. This is often paraphrased simply as the balance of evidence showing no harm to humans from mobile phones, although a significant number of individual studies do suggest such a relationship, or are inconclusive. Other digital wireless systems, such as data communication networks, produce similar radiation.

On 31 May 2011, the World Health Organization confirmed that mobile phone use may represent a long-term health risk,^[54][55] classifying mobile phone radiation as a "carcinogenic hazard" and "possibly carcinogenic to humans" after a team of scientists reviewed peer-review studies on cell phone safety.^[56] One study of past cell phone use cited in the report showed a "40% increased risk for gliomas (brain cancer) in the highest category of heavy users (reported average: 30 minutes per day over a 10‐year period)."^[57] This is a reversal from their prior position that cancer was unlikely to be caused by cellular phones or their base stations and that reviews had found no convincing evidence for other health effects.^[55][58] Certain countries, including France, have warned against the use of cell phones especially by minors due to health risk uncertainties.^[59] However, a study published 24 March 2012 in the British Medical Journal questioned these estimates, because the increase in brain cancers has not paralleled the increase in mobile phone use.^[60]

At least some recent studies have found an association between cell phone use and certain kinds of brain and salivary gland tumors. Lennart Hardell and other authors of a 2009 meta-analysis of 11 studies from peer-reviewed journals concluded that cell phone usage for at least ten years “approximately doubles the risk of being diagnosed with a brain tumor on the same ('ipsilateral') side of the head as that preferred for cell phone use.”^[61]

In addition, a mobile phone can spread infectious diseases by its frequent contact with hands. One study came to the result that pathogenic bacteria are present on approximately 40% of mobile phones belonging to patients in a hospital, and on approximately 20% of mobile phones belonging to hospital staff.^[62]

A study on mice suggested that cell phone use during pregnancy may be likely to result in lasting mental health problems for offspring that resemble the effects of ADHD.^[63]

Future evolution: broadband fourth generation (4G)[link]

The recently released 4th generation, also known as Beyond 3G, aims to provide broadband wireless access with nominal data rates of 100 Mbit/s to fast moving devices, and 1 Gbit/s to stationary devices defined by the ITU-R.^[64]

4G systems may be based on the 3GPP LTE (Long Term Evolution) cellular standard, offering peak bit rates of 326.4 Mbit/s. It may perhaps also be based on WiMax or Flash-OFDM wireless metropolitan area network technologies that promise broadband wireless access with speeds that reaches 233 Mbit/s for mobile users. The radio interface in these systems is based on all-IP packet switching, MIMO diversity, multi-carrier modulation schemes, Dynamic Channel Assignment (DCA) and channel-dependent scheduling. A 4G system should be a complete replacement for current network infrastructure and is expected to be able to provide a comprehensive and secure IP solution where voice, data, and streamed multimedia can be given to users on a "Anytime, Anywhere" basis, and at much higher data rates than previous generations.

In March 2011, KT from South Korea announced that they had expanded its high-speed wireless broadband network by 4G WiBro cover 85 percent of the population. It is the largest broadband network covered in the world, followed by Japan and US with 70 percent and 36 percent respectively.^[65]

In early 2011, 4G mobile phones were released by Motorola, HTC and Samsung.^[66]

Environmental impact[link]

This section requires expansion.

Studies have shown that around 40-50% of the environmental impact of a mobile phone occurs during the manufacturing of the printed wiring boards and integrated circuits.^[67] After purchase, the average user then replaces their mobile phone every 11 to 18 months.^[68][69] The discarded phones then contribute to electronic waste.

Mobile phone manufacturers within Europe are subject to the WEEE directive. Australia introduced a mobile phone recycling scheme.^[70]

See also[link]

References[link]

Further reading[link]

External links[link]

Look up mobile phone in Wiktionary, the free dictionary.

Wikimedia Commons has media related to: Mobile phones

• How Cell Phones Work at HowStuffWorks
• "The Long Odyssey of the Cell Phone", 15 photos with captions from Time magazine
• Cell Phone, the ring heard around the world—a video documentary by the Canadian Broadcasting Corporation

v t e Telecommunications (general) History Beacons Broadcasting Communications satellites Computer networks Drums Electrical telegraphs Fax Heliographs Hydraulic telegraphs Internet Mass media Mobile phones Optical telegraphy Photophones Radio Radiotelephones Telegraphy Telephones The Telephone Cases Television Undersea telegraph lines Videophones Pioneers Edwin Howard Armstrong John Logie Baird Alexander Graham Bell Tim Berners-Lee Jagadish Chandra Bose Vint Cerf Claude Chappe Lee De Forest Philo Farnsworth Reginald Fessenden Elisha Gray Guglielmo Marconi Alexander Stepanovich Popov Johann Philipp Reis Nikola Tesla Alfred Vail Charles Wheatstone Vladimir K. Zworykin Media Coaxial cable Free-space optical Optical fiber Radio waves Telephone lines Terrestrial microwave Networks ARPANET BITNET Ethernet FidoNet ISDN Internet Local area Mobile NGN Packet switched Public Switched Telephone Radio Television Telex Wide area World Wide Web Wireless Geographic v t e Telecommunications in Africa Sovereign states Algeria Angola Benin Botswana Burkina Faso Burundi Cameroon Cape Verde Central African Republic Chad Comoros Democratic Republic of the Congo Republic of the Congo Côte d'Ivoire (Ivory Coast) Djibouti Egypt Equatorial Guinea Eritrea Ethiopia Gabon The Gambia Ghana Guinea Guinea-Bissau Kenya Lesotho Liberia Libya Madagascar Malawi Mali Mauritania Mauritius Morocco Mozambique Namibia Niger Nigeria Rwanda São Tomé and Príncipe Senegal Seychelles Sierra Leone Somalia South Africa South Sudan Sudan Swaziland Tanzania Togo Tunisia Uganda Zambia Zimbabwe States with limited recognition Azawad Sahrawi Arab Democratic Republic Somaliland Dependencies and other territories Canary Islands / Ceuta / Melilla / Plazas de soberanía (Spain) Madeira (Portugal) Mayotte / Réunion (France) Saint Helena / Ascension Island / Tristan da Cunha (United Kingdom) Western Sahara v t e Telecommunications in Asia Sovereign states Afghanistan Armenia Azerbaijan Bahrain Bangladesh Bhutan Brunei Burma (Myanmar) Cambodia People's Republic of China Cyprus East Timor (Timor-Leste) Egypt Georgia India Indonesia Iran Iraq Israel Japan Jordan Kazakhstan North Korea South Korea Kuwait Kyrgyzstan Laos Lebanon Malaysia Maldives Mongolia Nepal Oman Pakistan Philippines Qatar Russia Saudi Arabia Singapore Sri Lanka Syria Tajikistan Thailand Turkey Turkmenistan United Arab Emirates Uzbekistan Vietnam Yemen States with limited recognition Abkhazia Nagorno-Karabakh Northern Cyprus Palestine Republic of China (Taiwan) South Ossetia Dependencies and other territories British Indian Ocean Territory Christmas Island Cocos (Keeling) Islands Hong Kong Macau v t e Telecommunications in Europe Sovereign states Albania Andorra Armenia Austria Azerbaijan Belarus Belgium Bosnia and Herzegovina Bulgaria Croatia Cyprus Czech Republic Denmark Estonia Finland France Georgia Germany Greece Hungary Iceland Ireland Italy Kazakhstan Latvia Liechtenstein Lithuania Luxembourg Macedonia Malta Moldova Monaco Montenegro Netherlands Norway Poland Portugal Romania Russia San Marino Serbia Slovakia Slovenia Spain Sweden Switzerland Turkey Ukraine United Kingdom England Northern Ireland Scotland Wales States with limited recognition Abkhazia Kosovo Nagorno-Karabakh Northern Cyprus South Ossetia Transnistria Dependencies and other territories Åland Faroe Islands Gibraltar Guernsey Jersey Isle of Man Svalbard Other entities European Union v t e Telecommunications in North America Sovereign states Antigua and Barbuda Bahamas Barbados Belize Canada Costa Rica Cuba Dominica Dominican Republic El Salvador Grenada Guatemala Haiti Honduras Jamaica Mexico Nicaragua Panama Saint Kitts and Nevis Saint Lucia Saint Vincent and the Grenadines Trinidad and Tobago United States Dependencies and other territories Anguilla Aruba Bermuda Bonaire British Virgin Islands Cayman Islands Curaçao Greenland Guadeloupe Martinique Montserrat Navassa Island Puerto Rico Saint Barthélemy Saint Martin Saint Pierre and Miquelon Saba Sint Eustatius Sint Maarten Turks and Caicos Islands United States Virgin Islands v t e Telecommunications in Oceania Sovereign states Australia East Timor (Timor-Leste) Fiji Indonesia Kiribati Marshall Islands Federated States of Micronesia Nauru New Zealand Palau Papua New Guinea Samoa Solomon Islands Tonga Tuvalu Vanuatu Dependencies and other territories American Samoa Christmas Island Cocos (Keeling) Islands Cook Islands Easter Island French Polynesia Guam Hawaii New Caledonia Niue Norfolk Island Northern Mariana Islands Pitcairn Islands Tokelau Wallis and Futuna v t e Telecommunications in South America Sovereign states Argentina Bolivia Brazil Chile Colombia Ecuador Guyana Paraguay Peru Suriname Uruguay Venezuela Dependencies and other territories Aruba Bonaire Curaçao Falkland Islands French Guiana South Georgia and the South Sandwich Islands

This article relies on references to primary sources or sources affiliated with the subject, rather than references from independent authors and third-party publications. Please add citations from reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately, especially if potentially libelous or harmful. (January 2011)

Devra Lee Davis is an American epidemiologist and writer. She was born on June 7th, 1946, in Washington, DC^[1], the daughter of Harry B. and Jean Langer Davis, and was raised in Donora and Pittsburgh, Pennsylvania.

Her career has spanned all areas of academia, public policy, and scientific research^[2]. While Senior Advisor to the Assistant Secretary for Health in the Department of Health and Human Services, she counseled leading officials in the United States, United Nations, European Environment Agency, Pan American Health Organization, World Health Organization, and World Bank^[2].

She has also authored more than 190 publications in books and journals ranging from the Lancet and Journal of the American Medical Association to Scientific American and the New York Times and blogs in Freakonomics for the New York Times, Huffington Post and elsewhere^[2].

Education[link]

Davis graduated from Taylor Allderdice High School and later received a B.S. from the University of Pittsburgh in 1967^[1]. A former Scholar in Residence at the National Academy of Sciences, she completed her Ph.D. in science studies at the University of Chicago as a Danforth Fellow, and an M.P.H. at Johns Hopkins University as a National Cancer Institute post-doctoral fellow^[1].

Professional life[link]

From 1970 to 1976 she was assistant professor of sociology at Queens College of the City University of New York. Beginning in 1982 she was a faculty associate at Johns Hopkins University, Department of Health Policy and Management, School of Hygiene and Public Health^[1].

She served as a visiting professor at University of Missouri in 1983; Municipal Institute, Barcelona, Spain, in 1985^[1]; Mount Sinai Medical Center, New York, NY, Department of Community Medicine, Division of Occupational and Environmental Medicine, in 1988^[1]; and visiting scholar at Hebrew University, School of Public Health, Unit of Occupational and Environmental Medicine in 1989^[1].

She is formerly the director of the Center for Environmental Oncology of the University of Pittsburgh Cancer Institute^[2]; the multidisciplinary center includes experts in medicine, basic research, engineering and public policy, who developed cutting-edge studies to identify the causes of cancer and propose policies to reduce the risks of the disease.

Other professional activities[link]

A member of both the American Colleges of Toxicology and of Epidemiology^[2], Dr. Davis is also a Visiting Professor in the Department of Environmental and Occupational Medicine at Mt. Sinai Medical Center in New York City^[1]. In addition, she was a Visiting Scientist of the Strang Cornell Cancer Prevention Center of the Rockefeller University in 1994^[1].

She served as a member of the Board of Scientific Counselors of the U.S. National Toxicology Program, 1983-86^[2].

Female health[link]

Davis was Scientific Advisor to the Women's Environment and Development Organization in 1995^[1]. Davis was also a founding member of the International Breast Cancer Prevention Collaborative Research Group^[1], an organization dedicated to exploring the causes of breast cancer.

Environment[link]

She currently serves on the Board of the Climate Institute^[1], and the Coalition of Organizations on the Environment and Jewish Life^[1], and the Earthfire Institute, and is a scientific adviser to the UK registered charity MobileWise.^[3] She occasionally discusses avoidable environmental health hazards on national and local programming with NPR, Fox News, CNN, ABC, PBS, BBC^[2]. She also served as a Lead Author of the Intergovernmental Panel on Climate Change—the group awarded the Nobel Peace Prize in 2007 with the Honorable Al Gore^[2].

President Clinton appointed the Honorable Dr. Davis to the newly established Chemical Safety and Hazard Investigation Board, an independent executive branch agency that investigates, prevents, and mitigates chemical accidents, where she served from 1994–99^[2].

Awards[link]

She was honored by the Betty Ford Comprehensive Cancer Center and the American Cancer Society with the Breast Cancer Awareness Award, commended by the Director of the National Cancer Institute for Outstanding Service, and appointed a Global Environmental advisor to Newsweek Magazine^[2].

The recipient of a Women’s Leadership Exchange Compass Award, presented by OPEN: The Small Business Network from American Express, for breaking the paradigms of how women are perceived, Dr. Davis received the first Lisa Zhang Environmental Award from the United Nations in July 2008^[2].

In June 2009, Dr. Davis was honored with the Artemis Award presented by the Euro-American Women's Council and the Greek Foreign Ministry in recognition of her outstanding contributions to science and public health policy^[2].

Private Life[link]

Davis married Richard D. Morgenstern on October 19, 1975. They have two children.

Publications[link]

Her book When Smoke Ran Like Water, which begins with the tale of the Donora Smog of 1948, was a finalist for the National Book Award in 2002^[1][2]. Davis's second book, The Secret History of the War on Cancer was published by Basic Books in October 2007^[1].

Her new book, Disconnect, debuted in September 2010. It discusses the dangers of modern cell phone use and the ways in which the cell phone industry has gone to lengths to cover these up.

Publications include:

• Trends in Cancer Mortality in Industrial Countries (Annals of the New York Academy of Sciences), New York Academy of Sciences, 1990^[1]
• Urban Air Pollution Risks to Children: A Global Environmental Health Indicator, World Resources Institute, 1999^[1]
• When Smoke Ran Like Water: Tales of Environmental Deception And the Battle Against Pollution, Diane Publishing Company, 2002
• The Secret History of the War on Cancer, Basic Books, 2007^[1]
• Disconnect: The Truth About Cell Phone Radiation, What the Industry Has Done to Hide It, and How to Protect Your Family, Dutton Adult, 2010

Listening[link]

• Fresh Air interview, October 4, 2007
• Writer's Voice interview, January, 2008
• TVO (Ontario) interview, October 3, 2008. Length: 26:54

Mainstream Media References[link]

• "Cell-Phone Safety: What the FCC Didn't Test". Time.com. http://www.time.com/time/nation/article/0,8599,2027523,00.html. Retrieved 2011-01-26. 

External links[link]

• http://www.epidemiology.pitt.edu/davis.asp - Devra Davis at the Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh
• http://www.environmentalhealthtrust.org/ - Environmental Health Trust, a web site maintained by the Devra Lee Davis Charitable Foundation

Reading[link]

Source: Contemporary Authors Online. The Gale Group, 2004. PEN (Permanent Entry Number): 0000154775.

References[link]