Mobile phone Wikipedia

While there are rumors of mobile phones causing cancer, there was a study conducted by International Agency for Research on Cancer (IARC) that stated the there could be an increase risk of brain tumors with the use of smartphones, this is not confirmed. In Europe, regulations and technology have allowed the limited introduction of the use of passenger mobile phones on some commercial flights, and elsewhere in the world many airlines are moving towards allowing mobile phone use in flight. This has introduced additional difficulties for law enforcement officials when attempting to distinguish one usage from another in drivers using their devices. In other countries, including the UK and France and in many US states, only handheld phone use is banned while hands-free use is permitted. Mobile phone use while driving, including talking on the phone, texting, or operating other phone features, is common but controversial.
Smartphones are defined by their advanced computing capabilities, which include internet connectivity and access to a wide range of applications. Mobile phone technology has progressed significantly since its origins, evolving from large car-mounted systems to compact, handheld devices. Furthermore, mobile phones offer satellite-based services, such as navigation and messaging, as well as business applications and payment solutions (via scanning QR codes or near-field communication (NFC)). The Motorola Razr V3 and LG Chocolate are two examples of devices that were popular for being fashionable while not necessarily focusing on the original purpose of mobile phones, i.e. a device to provide mobile telephony. Screen time, the amount of time using a device with a screen, has become an issue for mobile phones since the adaptation of smartphones. As of 2007, some hospitals had banned mobile devices due to a common misconception that their use would create significant electromagnetic interference.

• A cellular network mobile phone system gets its name from dividing the service area into many small cells, each with a base station with (for example) a useful range on the order of a kilometer (mile).
• Many passengers are pressing airlines and their governments to allow and deregulate mobile phone use, while some airlines, under the pressure of competition, are also pushing for deregulation or seeking new technology which could solve the present problems.
• A study conducted by the University of Vienna examined approaches for reducing inappropriate and problematic use of mobile phones, such as using mobile phones while driving.
• The first handheld mobile phone was demonstrated by Martin Cooper of Motorola in New York City on 3 April 1973, using a handset weighing c.
• This radio frequency link connects to the switching systems of a mobile phone operator, providing access to the public switched telephone network (PSTN).
• Low-end mobile phones are often referred to as feature phones and offer basic telephony.

In 2001, the third-generation (3G) was launched in Japan by NTT DoCoMo on the WCDMA standard. Cooper made the first ever call on a cell phone when he called Joel gtspins casino S. Engel, a rival of his who worked for AT&T, saying, “I’m calling you on a cell phone, but a real cell phone, a personal, handheld, portable cell phone.” A major breakthrough came in 1973, when the first handheld cellular mobile phone was demonstrated by John F. Mitchell and Martin Cooper of Motorola, using a handset weighing 2 kilograms (4.4 lb).

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The first publicly available LTE service was launched in Scandinavia by TeliaSonera in 2009. By 2009, it had become clear that, at some point, 3G networks would be overwhelmed by the growth of bandwidth-intensive applications, such as streaming media. This was followed by 3.5G or 3G+ enhancements based on the high-speed packet access (HSPA) family, allowing UMTS networks to have higher data transfer speeds and capacity.

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The cell towers are usually interconnected to each other and the phone network and the internet by wired connections. In the earliest mobile phone systems by contrast, all control was done manually; the customer would search for an unoccupied channel and speak to a mobile operator to request connection of a call to a landline number or another mobile. A cellular network mobile phone system gets its name from dividing the service area into many small cells, each with a base station with (for example) a useful range on the order of a kilometer (mile). As well, technical limitations such as antenna efficiency and receiver design limit the range of frequencies a customer unit could use. The critical advantage that modern cellular networks have over predecessor systems is the concept of frequency reuse allowing many simultaneous telephone conversations in a given service area.
In February 2014, 93% of mobile developers were targeting smartphones first for mobile app development. Up until that point, smartphone application distribution depended on third-party sources providing applications for multiple platforms, such as GetJar, Handango, Handmark, and PocketGear. The introduction of Apple’s App Store for the iPhone and iPod Touch in July 2008 popularized manufacturer-hosted online distribution for third-party applications (software and computer programs) focused on a single platform. A mobile app is a computer program designed to run on a mobile device, such as a smartphone. Of the two, Android has been the best-selling system worldwide on smartphones since 2011, and as of March 2025, Android had 71.9% of the overall market share, while iOS had 27.7%.
Studies have shown that around 40–50% of the environmental impact of mobile phones occurs during the manufacture of their printed wiring boards and integrated circuits. China has proposed using this technology to track the commuting patterns of Beijing city residents. Enabling contactless payments through NFC-equipped mobile phones requires the co-operation of manufacturers, network operators, and retail merchants. A pilot project in Bali was launched in 2011 by the International Finance Corporation and an Indonesian bank, Bank Mandiri. Soon afterwards, other media content appeared, such as news, video games, jokes, horoscopes, TV content and advertising. Mobile phones are used for a variety of purposes, such as keeping in touch with family members, for conducting business, and in order to have access to a telephone in the event of an emergency.

• By 2009, it had become clear that, at some point, 3G networks would be overwhelmed by the growth of bandwidth-intensive applications, such as streaming media.
• Screen time, the amount of time using a device with a screen, has become an issue for mobile phones since the adaptation of smartphones.
• Mobile phones are considered an important human invention as they have been one of the most widely used and sold pieces of consumer technology.
• Text messaging, which are performed on mobile phones, has also led to the creation of ‘SMS language’.
• The small speakers can also be used to listen to digital audio files of music or speech or watch videos with an audio component, without holding the phone close to the ear.
• The critical advantage that modern cellular networks have over predecessor systems is the concept of frequency reuse allowing many simultaneous telephone conversations in a given service area.

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This database of laws provides a comprehensive view of the provisions of laws that restrict the use of mobile communication devices while driving for all 50 states and the District of Columbia between 1992 when first law was passed, through 1 December 2010. Japan prohibits all mobile phone use while driving, including use of hands-free devices. 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.

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Although these phones are intended to prevent immodesty, some vendors report good sales to adults who prefer the simplicity of the devices; other Orthodox Jews question the need for them. In the UK and US, law enforcement and intelligence services use mobile phones to perform surveillance operations. Some mobile phones can make mobile payments via direct mobile billing schemes, or through contactless payments if the phone and the point of sale support near field communication (NFC). Eventually, the idea spread and in 1999, the Philippines launched the country’s first commercial mobile payments systems with mobile operators Globe and Smart.citation needed Recently, unique content for mobile phones has been emerging, from ringtones and ringback tones to mobisodes, video content that has been produced exclusively for mobile phones.citation needed

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The growth in popularity has been rapid in some places; for example, in the UK, the total number of mobile phones overtook the number of houses in 1999. Mobile phones are considered an important human invention as they have been one of the most widely used and sold pieces of consumer technology. For feature phones as of 2016update, the top-selling brands were Samsung, Nokia and Alcatel. In 1979, Nippon Telegraph and Telephone (NTT) launched the world’s first cellular network in Japan. The first handheld mobile phone was demonstrated by Martin Cooper of Motorola in New York City on 3 April 1973, using a handset weighing c.

Mobile phones are considered an important human invention as it has been one of the most widely used and sold pieces of consumer technology. A study by the London School of Economics found that banning mobile phones in schools could increase pupils’ academic performance, providing benefits equal to one extra week of schooling per year. They also stated that with the lack of data for the research and the usage periods of 15 years will warrant further research for smartphones and the cause of brain tumors. In most jurisdictions, prison inmates are forbidden from possessing mobile phones due to their ability to communicate with the outside world and other security issues. Other countries, such as China and the Netherlands, have introduced special lanes for smartphone users to help direct and manage them. Many passengers are pressing airlines and their governments to allow and deregulate mobile phone use, while some airlines, under the pressure of competition, are also pushing for deregulation or seeking new technology which could solve the present problems.