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Mobile phone Wikipedia A mobile phone or cell phone is a portable wireless telephone that allows users to make and receive calls over a radio frequency link while moving within a designated telephone service area, unlike fixed-location phones (landline phones). Text messaging, which are performed on mobile phones, has also led to the creation of 'SMS language'. In Japanese mobile cash lounge casino phone culture for example, mobile phones are often decorated with charms. In 2013, a national survey in the US reported the number of drivers who reported using their cellphones to access the Internet while driving had risen to nearly one of four. This can lead to drivers being stopped for using their device illegally for a phone call when, in fact, they were using the device legally, for example, when using the phone's incorporated controls for car stereo, GPS or satnav. This is more apparent in countries which ban both handheld and hands-free usage, rather than those which ban handheld use only, as officials cannot easily tell which function of the mobile phone is being used simply by looking at the driver. Due to the increasing complexity of mobile phones, they are often more like mobile computers in their available uses. In March 2011, a US insurance company, State Farm Insurance, announced the results of a study which showed 19% of drivers surveyed accessed the Internet on a smartphone while driving. In September 2010, the US National Highway Traffic Safety Administration (NHTSA) reported that 995 people were killed by drivers distracted by cell phones. Beyond traditional voice communication, digital mobile phones have evolved to support a wide range of additional services. Contrary to popular misconception, the Federal Aviation Administration (FAA) does not actually prohibit the use of personal electronic devices (including cell phones) on aircraft. By contrast, smartphones generally use a mobile operating system that often shares common traits across devices.
  • The first GSM phones and many feature phones had NOR flash memory, from which processor instructions could be executed directly in an execute in place architecture and allowed for short boot times.
  • Low-end mobile phones are often referred to as feature phones and offer basic telephony.
  • Because of these problems, the performance of mobile phone CPUs is often more appropriately given by scores derived from various standardized tests to measure the real effective performance in commonly used applications.
  • In Israel, similar phones to kosher phones with restricted features exist to observe the sabbath; under Orthodox Judaism, the use of any electrical device is generally prohibited during this time, other than to save lives, or reduce the risk of death or similar needs.
  • This radio frequency link connects to the switching systems of a mobile phone operator, providing access to the public switched telephone network (PSTN).
  • In the UK and US, law enforcement and intelligence services use mobile phones to perform surveillance operations.

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A hybrid mobile phone can hold up to four SIM cards, with a phone having a different device identifier for each SIM Card. 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, provided that this is not prevented by a SIM lock. 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. Most modern mobile phones use lithium-ion (Li-ion) batteries, which are designed to endure between 500 and 2,500 charge cycles. The typical lifespan of a mobile phone battery is approximately two to three years, although this varies based on usage patterns, environmental conditions, and overall care.

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Restrictions on the use of mobile phones are applied in a number of different contexts, often with the goal of health, safety, security or proper functioning of an establishment, or as a matter of etiquette. In Israel, similar phones to kosher phones with restricted features exist to observe the sabbath; under Orthodox Judaism, the use of any electrical device is generally prohibited during this time, other than to save lives, or reduce the risk of death or similar needs. Demand for metals used in mobile phones and other electronics fuelled the Second Congo War, which claimed almost 5.5 million lives. Even so, mobile phones typically have less value on the second-hand market if the phones original IMEI is blacklisted.

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Most early content for mobile phones tended to be copies of legacy media, such as banner advertisements or TV news highlight video clips. There are a huge variety of apps, including video games, music products and business tools. The first mobile news service, delivered via SMS, was launched in Finland in 2000, and subsequently many organizations provided "on-demand" and "instant" news services by SMS. 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. The first GSM phones and many feature phones had NOR flash memory, from which processor instructions could be executed directly in an execute in place architecture and allowed for short boot times. Capacity was further increased when phone companies implemented digital networks. Due to bandwidth limitations each cell will have a maximum number of cell phones it can handle at once. The cell towers are usually interconnected to each other and the phone network and the internet by wired connections.
  • Most early content for mobile phones tended to be copies of legacy media, such as banner advertisements or TV news highlight video clips.
  • Liquid-crystal displays are the most common; others are IPS, LED, OLED, and AMOLED displays.
  • 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).
  • Text messaging, which are performed on mobile phones, has also led to the creation of 'SMS language'.
  • In September 2010, the US National Highway Traffic Safety Administration (NHTSA) reported that 995 people were killed by drivers distracted by cell phones.
  • 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.
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. 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. 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. Former systems would cover a service area with one or two powerful base stations with a range of up to tens of kilometers' (miles), using only a few sets of radio channels (frequencies). The race to create truly portable telephone devices began after World War II, with developments taking place in many countries.