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A smartphone is a class of and device. They are distinguished from by their stronger hardware capabilities and extensive mobile operating systems, which facilitate wider software, (including over ), and functionality (including music, video, , and ), alongside core phone functions such as voice calls and . Smartphones typically include various that can be leveraged by their software, such as a , , , and , and support wireless communications protocols such as , , and satellite navigation.

Early smartphones were marketed primarily towards the enterprise market, attempting to bridge the functionality of standalone personal digital assistant (PDA) devices with support for cellular , but were limited by their battery life, bulky form factors, and the immaturity of wireless data services. In the 2000's, , 's platform, and began to gain market traction, with models often featuring keyboards and/or resistive touchscreen input, and emphasizing access to and wireless internet. Since the 2007 unveiling of the , the majority of smartphones have featured thin, slate-like form factors, with large, capacitive screens with support for gestures rather than physical keyboards, and offer the ability for users to download or purchase additional from a centralized , and use cloud storage and synchronization, virtual assistants, as well as services.

Improving hardware and faster wireless standards (such as LTE) have bolstered the growth of the smartphone industry. In the third quarter of 2012, one billion smartphones were in use worldwide. Global smartphone sales surpassed the sales figures for in early 2013.


History

Forerunner
The first commercially available device that could be properly referred to as a "smartphone" began as a prototype called "Angler" developed by Frank Canova in 1992 while at and demonstrated in November of that year at the computer industry trade show. A refined version was marketed to consumers in 1994 by under the name . In addition to placing and receiving cellular , the touchscreen-equipped Simon could send and receive and . It included an address book, calendar, appointment scheduler, calculator, world time clock, and notepad, as well as other visionary mobile applications such as maps, stock reports and news. History of first touchscreen smartphone Spinfold.com The term "smart phone" or "smartphone" was not coined until a year after the introduction of the Simon, appearing in print as early as 1995, describing AT&T's PhoneWriter Communicator.


Early integration of data signals with telephony
The first integration of data signals with telephony was conceptualized by in 1909 and pioneered by Theodore Paraskevakos beginning in 1968 with his work on transmission of electronic data through telephone lines. In 1971, while he was working with in Huntsville, Alabama, Paraskevakos demonstrated a and receiver that provided additional ways to communicate with remote equipment. This formed the original basis for what is now known as . The first caller ID equipment was installed at Peoples' Telephone Company in Leesburg, Alabama and was demonstrated to several telephone companies. The original and historic working models are still in the possession of Paraskevakos.U.S. Patent #3,812,296/5-21-1974 ( Apparatus for Generating and Transmitting Digital Information), U.S. Patent #3,727,003/4-10-1973 ( Decoding and Display Apparatus for Groups of Pulse Trains), U.S. Patent #3,842,208/10-15-1974 ( Sensor Monitoring Device)


PDA/phone hybrids
In the mid-late 1990s, many people who had mobile phones carried a separate dedicated PDA device, running early versions of operating systems such as , , or /. These operating systems would later evolve into early mobile operating systems. Most of the "smartphones" in this era were hybrid devices that combined these existing familiar PDA OSes with basic phone hardware. The results were devices that were bulkier than either dedicated mobile phones or PDAs, but allowed a limited amount of cellular Internet access. The trend at the time, however, that manufacturers competed on in both mobile phones and PDAs was to make devices smaller and slimmer. The bulk of these smartphones combined with their high cost and expensive data plans, plus other drawbacks such as expansion limitations and decreased battery life compared to separate standalone devices, generally limited their popularity to "" and business users who needed portable connectivity.

In March 1996, released the OmniGo 700LX, a modified HP 200LX palmtop PC with a Nokia 2110 mobile phone piggybacked onto it and -based software to support it. It had a 640×200 resolution CGA compatible four-shade gray-scale LCD screen and could be used to place and receive calls, and to create and receive text messages, emails and faxes. It was also 100% 5.0 compatible, allowing it to run thousands of existing software titles, including early versions of Windows.

In August 1996, released the Nokia 9000 Communicator, a digital cellular PDA based on the Nokia 2110 with an integrated system based on the PEN/GEOS 3.0 operating system from . The two components were attached by a hinge in what became known as a , with the display above and a physical below. The PDA provided e-mail; calendar, address book, and notebook applications; text-based Web browsing; and could send and receive faxes. When closed, the device could be used as a digital cellular telephone.

In June 1999 released the "pdQ Smartphone", a CDMA digital PCS smartphone with an integrated PDA and Internet connectivity.

Subsequent landmark devices included:

  • The Ericsson R380 (2000) by Ericsson Mobile Communications. The first device marketed as a "smartphone", it was the first -based phone, with PDA functionality and limited Web browsing on a resistive touchscreen utilizing a stylus. Users could not install their own software on the device, however.
  • The Kyocera 6035 (early 2001), a dual-nature device with a separate PDA operating system and CDMA mobile phone firmware. It supported limited Web browsing with the PDA software treating the phone hardware as an attached modem.
  • Handspring's Treo 180 (2002), the first smartphone that fully integrated the on a GSM mobile phone having telephony, SMS messaging and Internet access built in to the OS. The 180 model had a thumb-type keyboard and the 180g version had a Graffiti handwriting recognition area, instead.


Japanese cell phones
In 1999, Japanese wireless provider launched , a new platform which provided data transmission speeds up to 9.6 kilobits per second, and access web services available through the platform such as online shopping. NTT DoCoMo's i-mode used , a language which restricted some aspects of traditional in favor of increasing data speed for the devices. Limited functionality, small screens and limited bandwidth allowed for phones to use the slower data speeds available. The rise of i-mode helped NTT DoCoMo accumulate an estimated 40 million subscribers by the end of 2001, and ranked first in market capitalization in Japan and second globally. This power would later wane in the face of the rise of 3G and new phones with advanced wireless network capabilities. Japanese cell phones increasingly diverged from global standards and trends to offer other forms of advanced services and functionality, such as , near-field communication (NFC), and 1seg mobile television.


Early smartphones
Smartphones were still rare outside Japan until the introduction of the in 2002, which saw moderate success among U.S. consumers as the Sidekick. Later, in the mid-2000s, business users in the U.S. started to adopt devices based on Microsoft's , and then smartphones from Research In Motion. American users popularized the term "CrackBerry" in 2006 due to the BlackBerry's addictive nature.

Outside the U.S. and Japan, Nokia was seeing success with its smartphones based on , originally developed by Psion for their personal organisers, and it was the most popular smartphone OS in during the middle to late 2000s. Initially, Nokia's Symbian smartphones were focused on business with the , similar to Windows Mobile and BlackBerry devices at the time. From 2006 onwards, Nokia started producing consumer-focused smartphones, popularized by the entertainment-focused . Until 2010, Symbian was the world's most widely used smartphone operating system.


Form factor shift
In the 2000s, it was common for smartphones to have a physical T9 numeric keypad or keyboard in either a candybar or sliding form factor. Some smartphones had resistive touchscreens, which allowed for and handwriting input with a stylus or finger.

In January 2007, unveiled the iPhone, the company's first smartphone. The iPhone was designed around a large capacitive touchscreen, which supported the use of gestures for interactions (such as "pinching" to zoom in and out on photos and web pages), and offered features such as a web browser designed to render full web pages (as opposed to stripped down WAP services), multimedia functionality (including synchronization with its music software), and online services such as . Although facing criticism for not supporting the latest 3G wireless network standards, or the installation of third-party software on-launch, the iPhone was praised for its hardware and software design, and its June 2007 release was met with heavy demand, with customers waiting in lines outside locations to be among the first to purchase it. The following year, Apple unveiled the iPhone 3G, and a service known as App Store—which would allow users to download and purchase new for their iPhone.

The iPhone's pioneering design affected the development of another smartphone OS platform, Android, with a more BlackBerry-esque prototype device scrapped in favor of a touchscreen device with a slide-out physical keyboard. The first Android device, the , was released in September 2008.

Android and iPhone devices popularized the smartphone form factor based on a large capacitive touchscreen, and led to the decline of earlier, keyboard- and keypad-focused platforms. , for instance, discontinued Windows Mobile and started a new touchscreen-oriented OS from scratch, called . Nokia abandoned Symbian and partnered with Microsoft to use Windows Phone on its smartphones. Windows Phone became the third-most-popular smartphone OS, before being replaced by Windows 10 Mobile, which declined in share to become "largely irrelevant" at less than 0.5% of the smartphone market. It's official: Windows 10 Mobile is irrelevant Palm replaced their with , which was bought by Hewlett-Packard and later sold to for use on LG . BlackBerry Limited, formerly known as Research In Motion, made a new platform based on , BlackBerry 10, with which it was possible to control a device without having to press any physical buttons; this platform was later discontinued.

By the mid-2010s, almost all smartphones were touchscreen-only, and Android and smartphones dominated the market since smartphones started to grow in use by 2012 and 2013.


Developments in the 2010s
In 2013, launched its first "socially ethical" smartphone at the London Design Festival to address concerns regarding the sourcing of materials in the manufacturing. In late 2013, QSAlpha commenced production of a smartphone designed entirely around security, encryption and identity protection. Some companies began to release smartphones incorporating to create curved form factors, such as the Samsung Galaxy Round and LG G Flex.

In October 2013, Motorola Mobility announced , a concept for a modular smartphone platform that would allow users to customize and upgrade their phones with add-on modules that attached magnetically to a frame. Ara was retained by Google following its sale of Motorola Mobility to , but was shelved in 2016. That year, LG and Motorola both unveiled smartphones featuring a limited form of modularity for accessories; the LG G5 allowed accessories to be installed via the removal of its battery compartment, while the utilizes accessories attached magnetically to the rear of the device.

The first smartphone with a fingerprint reader was the Motorola Atrix 4G in 2011. In September 2013, the iPhone 5S was unveiled as the first smartphone on a major U.S. carrier since the Atrix to feature this technology.

By 2014, 1440p displays began to appear on high-end smartphones. In 2015, Sony released the Xperia Z5 Premium, featuring a 4K resolution display, although only images and videos could actually be rendered at that resolution (all other software is upscaled from 1080p). Microsoft, expanding upon the concept of Motorola's short-lived "Webtop", unveiled functionality for its Windows 10 operating system for phones that allows supported devices to be for use with a PC-styled desktop environment. Other major technologies began to trend in 2016, including a focus on and augmented reality experiences catered towards smartphones, the newly introduced connector, and improving LTE technologies. As of 2015, the global for smartphone ownership was 43%. forecast that 2.87 billion people would own smartphones in 2020.

New trends for smartphone displays began to emerge in 2017, with both LG and Samsung releasing flagship smartphones utilizing displays with taller aspect ratios than the common ratio. These designs allow the display to have a larger physical size, but with a slimmer width than 16:9 displays with an equivalent screen size. Another trend popularized that year were designs—colloquially known as a "notch"—where the front-facing camera, and sometimes other sensors typically located along the top bezel of a device, are contained into a tab-like area at the top of the device that the display wraps around. These designs allow for "edge-to-edge" displays that take up nearly the entire height of the device, with little to no bezel along the top. This design characteristic was popularized by the (which featured a circular tab for its camera) and (which used a wider tab to contain a camera and facial scanning system). In 2018, the first smartphones featuring fingerprint readers embedded within displays were announced.


Future possible developments
OLED smartphones have been anticipated for years but have failed to materialize because of the relatively high failure rate when producing these screens. Creating a battery that can be folded is another hurdle. Bendable smartphones aren't coming anytime soon , The Sydney Morning Herald, Ian King, December 16, 2013 Samsung has attempted to make a smartphone with a flexible display. Samsung is still on some finishing touches which after then may become the first OLED or flexible smartphone made.


Hardware

Central processing unit
Smartphones have central processing units (CPUs), similar to those in computers, but optimised to operate in low power environments.

Mobile CPU performance depends not only on the clock rate (generally given in multiples of ) but also the also greatly affects overall performance. 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.


Display
One of the main characteristics of smartphones is the . Depending on the device's design, the screen fills most or nearly all of the space on a device's front surface. Many smartphone displays have an aspect ratio of , but taller aspect ratios became more common in 2017.

Screen sizes are measured in diagonal ; phones with screens larger than 5.2 inches are often called "." Smartphones with screens over 4.5 inches in size are commonly difficult to use with only a single hand, since most thumbs cannot reach the entire screen surface; they may need to be shifted around in the hand, held in one hand and manipulated by the other, or used in place with both hands. Due to design advances, some modern smartphones with large screen sizes and "edge-to-edge" designs have compact builds that improve their ergonomics, while the shift to taller aspect ratios have resulted in phones that have larger screen sizes whilst maintaining the ergonomics associated with smaller 16:9 displays.

Liquid-crystal displays are the most common; others are , , , and displays. Some displays are integrated with pressure-sensitive digitizers, such as those developed by Wacom and , and Apple's "3D Touch" system.


Sound
Some audio quality enhancing features, such as Voice over LTE and , have appeared and are often available on newer smartphones. Sound quality can remain a problem due to the design of the phone, the quality of the cellular network and compression algorithms used in long distance calls. Audio quality can be improved using a application over . Cellphones have small speakers so that the user can use a feature and talk to a person on the phone without holding it to their ear. 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.


Battery
By the end of 2017, smartphone battery life has become generally adequate; however, earlier smartphone battery life was poor due to the weak batteries that could not handle the significant power requirements of the smartphones' computer systems and color screens.

Smartphone users purchase additional chargers for use outside the home, at work, and in cars and by buying portable external "battery packs". External battery packs include generic models which are connected to the smartphone with a cable and custom-made models that "piggyback" onto a smartphone's case. In 2016, Samsung had to recall millions of the Galaxy Note 7 smartphones due to an explosive battery issue. For consumer convenience, wireless charging stations have been introduced in some hotels, bars, and other public spaces.


Accessories
A wide range of accessories are sold for smartphones, including cases, , power charging cables, wireless power stations, adapters (for connecting USB drives and or, in some cases, a HDMI cable to an external monitor), add-on batteries, , combined headphone-microphones (which, for example, allow a person to privately conduct on the device without holding it to the ear), and -enabled that enable users to listen to media from their smartphones wirelessly.

Cases range from relatively inexpensive rubber or soft plastic cases which provide moderate protection from bumps and good protection from scratches to more expensive, heavy-duty cases that combine a rubber padding with a hard outer shell. Some cases have a "book"-like form, with a cover that the user opens to use the device; when the cover is closed, it protects the screen. Some "book"-like cases have additional pockets for credit cards, thus enabling people to use them as .

Accessories include products sold by the manufacturer of the smartphone and compatible products made by other manufacturers.


Software

Mobile operating systems
A mobile operating system (or mobile OS) is an for , , , or other .

Mobile operating systems combine features of a personal computer operating system with other features useful for mobile or handheld use; usually including, and most of the following considered essential in modern mobile systems; a , , , Wi-Fi Protected Access, , Global Positioning System (GPS) mobile navigation, and , speech recognition, voice recorder, music player, near field communication, and . By Q1 2018, over 383 million smartphones were sold with 85.9 percent running Android, 14.1 percent running and other OSes negligible. Android alone is more popular than the popular desktop operating system Windows, and in general smartphone use (even without tablets) outnumber desktop use.

Mobile devices with mobile communications abilities (e.g., smartphones) contain two mobile operating systemsthe main user-facing software platform is supplemented by a second low-level proprietary real-time operating system which operates the radio and other hardware. Research has shown that these low-level systems may contain a range of security vulnerabilities permitting malicious to gain high levels of control over the mobile device.Thom Holwerda, , November 12, 2013, The second operating system hiding in every mobile phone


Mobile app
A mobile app is a computer program designed to run on a mobile device, such as a smartphone. The term "app" is a shortening of the term "software application".


Application stores
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 ( and computer programs) focused on a single platform. There are a huge variety of apps, including , music products and business tools. Up until that point, smartphone application distribution depended on third-party sources providing applications for multiple platforms, such as , , , and . Following the success of the App Store, other smartphone manufacturers launched application stores, such as Google's Android Market (later renamed to the Google Play Store) and RIM's BlackBerry App World and Android-related app stores like . In February 2014, 93% of mobile developers were targeting smartphones first for mobile app development. W3C Interview: Vision Mobile on the App Developer Economy with Matos Kapetanakis and Dimitris Michalakos . February 18, 2014. Retrieved February 24, 2015.


Sales
Since 1996, smartphone shipments have had positive growth. In November 2011, 27% of all photographs created were taken with camera-equipped smartphones. In September 2012, a study concluded that 4 out of 5 smartphone owners use the device to shop online. Global smartphone sales surpassed the sales figures for feature phones in early 2013. Worldwide shipments of smartphones topped 1 billion units in 2013, up 38% from 2012's 725 million, while comprising a 55% share of the mobile phone market in 2013, up from 42% in 2012.
( via )
In Q1 2016 for the first time the shipments dropped by 3 percent . The situation was caused by the maturing China market.


By manufacturer
+ Worldwide Smartphones Vendors Market Share

In 2011, Samsung had the highest shipment worldwide, followed by Apple. In 2013, Samsung had 31.3% market share, a slight increase from 30.3% in 2012, while Apple was at 15.3%, a decrease from 18.7% in 2012. Huawei, LG and Lenovo were at about 5% each, significantly better than 2012 figures, while others had about 40%, the same as the previous years figure. Only Apple lost market share, although their shipment volume still increased by 12.9 percent; the rest had significant increases in shipment volumes of 36 to 92 percent. In Q1 2014, Samsung had a 31% share and Apple had 16%. In Q4 2014, Apple had a 20.4% share and Samsung had 19.9%. In Q2 2016, Samsung had a 22.3% share and Apple had 12.9%. In Q1 2017, IDC reported that Samsung was first placed, with 80 million units, followed by Apple with 50.8 million, Huawei with 34.6 million, Oppo with 25.5 million and Vivo with 22.7 million.

Samsung's mobile business is half the size of Apple's, by revenue. Apple business has been increasing very rapidly over the past 4 years.


By operating system

Use

Social
A 2012 University of Southern California study found that adolescent sexual activity was more common among owners of smartphones. A study conducted by the Rensselaer Polytechnic Institute's (RPI) Lighting Research Center (LRC) concluded that smartphones, or any backlit devices, can seriously affect sleep cycles. Some persons might become psychologically attached to smartphones resulting in anxiety when separated from the devices.Cheever, N. A., Rosen, L. D., Carrier, L. M., & Chavez, A. (2014). Out of sight is not out of mind: The impact of restricting wireless mobile device use on anxiety levels among low, moderate and high users. Computers in Human Behavior, 37, 290-297. A "" (a combination of "smartphone" and "") is a walking person using a smartphone and not paying attention as they walk, possibly risking an accident in the process, an increasing social phenomenon. The issue of slow-moving smartphone users led to the temporary creation of a "mobile lane" for walking in , . The issue of distracted smartphone users led the city of Augsburg, Germany to embed pedestrian traffic lights in the pavement.Rick Noack (April 25, 2016) This city embedded traffic lights in the sidewalks so that smartphone users don’t have to look up The Washington Post. Retrieved 5 May 2016.


Mobile banking and payment

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

Branchless banking has been successful in South Africa and the . A pilot project in was launched in 2011 by the International Finance Corporation and an bank, .

Another application of mobile banking technology is , a US-based nonprofit micro-lending 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 borrowers in rural Africa who have mobile phones and can use the Internet.

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

Some mobile phones can make via direct mobile billing schemes, or through contactless payments if the phone and the point of sale support near field communication (NFC). Enabling contactless payments through NFC-equipped mobile phones requires the co-operation of manufacturers, network operators, and retail merchants.


While driving

Mobile phone use while driving—including , , playing media, , , using mapping apps or operating other phone features—is common but controversial, since it is widely considered dangerous due to what is known as distracted driving. Being distracted while operating a motor vehicle has been shown to increase the risk of . In September 2010, the US National Highway Traffic Safety Administration (NHTSA) reported that 995 people were killed by drivers distracted by phones. 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. Many jurisdictions prohibit the use of mobile phones while driving. In Egypt, Israel, Japan, Portugal and Singapore, both handheld and hands-free on a mobile phone (which uses a ) is banned. In other countries including the UK and France and in many US states, only the use of calling on handheld phones is banned, while hands-free use is permitted.

A 2011 study reported that over 90% of college students surveyed text (initiate, reply or read) while driving. The scientific literature on the danger of driving while sending a text message from a mobile phone, or texting while driving, is limited. A simulation study at the University of Utah found a sixfold increase in distraction-related accidents when texting. Due to the complexity of smartphones that began to grow more after, this has introduced additional difficulties for law enforcement officials when attempting to distinguish one usage from another in drivers using their devices. 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 phone is being used simply by looking at the driver. This can lead to drivers being stopped for using their device illegally for a call when, in fact, they were using the device legally, for example, when using the phone's incorporated controls for car stereo, or .

A 2010 study reviewed the incidence of phone use while and its effects on behavior and safety. In 2013 a national survey in the US reported the number of drivers who reported using their phones to access the Internet while driving had risen to nearly one of four. A study conducted by the University of Vienna examined approaches for reducing inappropriate and problematic use of mobile phones, such as using phones while driving.

Accidents involving a driver being distracted by being in a on a phone have begun to be prosecuted as negligence similar to speeding. In the , from 27 February 2007, motorists who are caught using a handheld phone while driving will have three penalty points added to their license in addition to the fine of £60. This increase was introduced to try to stem the increase in drivers ignoring the law. prohibits all use of phones while driving, including use of hands-free devices. New Zealand has banned handheld phone use since 1 November 2009. Many states in the United States have banned text messaging on phones while driving. Illinois became the 17th American state to enforce this law. As of July 2010, 30 states had banned texting while driving, with Kentucky becoming the most recent addition on July 15.

Public Health Law Research maintains a list of distracted driving laws in the . This database of laws provides a comprehensive view of the provisions of laws that restrict the use of mobile devices while driving for all 50 states and the District of Columbia between 1992, when first law was passed through December 1, 2010. The dataset contains information on 22 dichotomous, continuous or categorical variables including, for example, activities regulated (e.g., texting versus talking, hands-free versus handheld calls, web browsing, gaming), targeted populations, and exemptions.


Legal
A "patent war" between Samsung and Apple started when the latter claimed that the original Galaxy S Android phone copied the interfaceand possibly the hardwareof Apple's iOS for the iPhone 3GS. There was also smartphone patents licensing and litigation involving , , Apple Inc., Samsung, , , , , and , among others. The conflict is part of the wider "patent wars" between multinational technology and software corporations. To secure and increase , companies granted a can sue to prevent competitors from using the methods the patent covers. Since the 2010's the number of lawsuits, counter-suits, and trade complaints based on patents and designs in the market for smartphones, and devices based on smartphone OSes such as Android and , has increased significantly. Initial suits, countersuits, rulings, license agreements, and other major events began in 2009 as the smartphone market stated to grow more rapidly by 2012.


Facsimile
Some allows for sending and receiving , over a smartphone, including facsimile data (composed of raster graphics) generated directly and digitally from document and image file formats.


Medical
With the rise in number of mobile medical apps in the market place, government regulatory agencies raised concerns on the safety of the use of such applications. These concerns were transformed into regulation initiatives worldwide with the aim of safeguarding users from untrusted medical advice.


Security
Smartphone malware is easily distributed through an insecure . Mobile Malware Development Continues To Rise, Android Leads The Way. Often, malware is hidden in pirated versions of legitimate apps, which are then distributed through third-party app stores. Malware risk also comes from what is known as an "update attack", where a legitimate application is later changed to include a malware component, which users then install when they are notified that the app has been updated. As well, one out of three robberies in 2012 in the United States involved the theft of a mobile phone. An online petition has urged smartphone makers to install in their devices. In 2014, Apple's "Find my iPhone" and Google's "Android Device Manager" can locate, disable, and wipe the data from phones that have been lost or stolen. With BlackBerry Protect in OS version 10.3.2, devices can be rendered unrecoverable to even BlackBerry's own Operating System recovery tools if incorrectly authenticated or dissociated from their account.

Leaked documents published by , codenamed Vault 7 and dated from 2013–2016, detail the capabilities of the Central Intelligence Agency (CIA) to perform electronic surveillance and , including the ability to compromise the operating systems of most smartphones (including and Android).


Sleep
Using smartphones late at night can disturb sleep, due to the blue light and brightly lit screen, which affects levels and . In an effort to alleviate these issues, several apps that change the color temperature of a screen to a warmer hue based on the time of day to reduce the amount of blue light generated have been developed for Android, while iOS 9.3 integrated similar, system-level functionality known as "Night Shift". Amazon released a feature known as "blue shade" in their Fire OS "Bellini" 5.0 and later. It has also been theorized that for some users, addicted use of their phones, especially before they go to bed, can result in "". Many people also use their phones as alarm clocks, which can also lead to loss of sleep.Kalsbeek, Andries (2012). The Neurobiology of Circadian Timing Elsevier. pp. 382.


Bokeh cameras
Pocket cameras have difficulty producing in images, but nowadays, some smartphones have dual-lens cameras that produce the bokeh effect easily, and can even rearrange the level of bokeh after shooting. The iPhone 7 Plus debuted with a dual-lens camera in the back of the smartphone. More advanced smartphones may come with 'quad cameras', or two dual-lens cameras such as the Honor 9 Lite smartphone. The back and front of the smartphone each have a 13MP main lens and a 2MP lens for capturing depth information. The Evercoss U50A Max smartphone has 4 cameras, and costs less than $100.

Huawei P20 Pro smartphone with triple lenses in the back of the smartphone has been launched as bokeh camera smartphone with optical zoom. First lens has 40MP , second lens has 20MP and third lens has 8MP RGB 3x. The zoom can be enhanced to 5x with combination of the optical zoom and megapixel lens 40MP RGB to produce undeteriorated (optical+digital) zoom or without loss of quality.


See also
  • Comparison of smartphones
  • Lists of mobile computers
  • List of mobile software distribution platforms
  • Media Transfer Protocol
  • Mobile Internet device
  • Portable media player
  • Smartphone zombie


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