Mobile phone
Transcript: A mobile phone, cell phone or hand phone is an electronic device used to make mobile telephone calls across a wide geographic area, History Uses Principal Brands Health effects Marìa Guevara Meylin Sancho Sabino Vargas The World Health Organization confirmed that mobile phone use may represent a long-term health risk, 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. 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 (reported average: 30 minutes per day over a 10‐year period). 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 more general computing capabilities are referred to as smartphones. The mobile phone goes back at the beginnings of World War II. It is an equipment that allows the contact with the troops via radio waveses. It was the beginning of one of the technologies with the most of the advantages. although continues in the search of new features and improvements. The first hand-held mobile phone was demonstrated by Dr Martin Cooper of Motorola in 1973. Sony Erickson Nokia Motorola Samsung LG Apple Mobiles Phones
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