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Portal:Telephones

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Wikipedia portal for content related to Telephones

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The Telephones Portal

Atelephone, colloquially referred to as aphone, is atelecommunications device that enables two or more users to conduct aconversation when they are too far apart to be easily heard directly. A telephone convertssound, typically and most efficiently thehuman voice, into electronicsignals that are transmitted viacables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived fromAncient Greek:τῆλε,romanized: tēle,lit. 'far' andφωνή (phōnē,voice), together meaningdistant voice.

In 1876,Alexander Graham Bell was the first to be granted a United Statespatent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable inbusiness,government, and inhouseholds. (Full article...)

TheSamsung Galaxy Z series arefoldable smartphones.

Amobile phone, orcell phone, is a portabletelephone that allows users to make and receivecalls over aradio frequency link while moving within a designated telephone service area, unlike fixed-location phones (landline phones). This radio frequency link connects to the switching systems of amobile phone operator, providing access to thepublic switched telephone network (PSTN). Modern mobile telephony relies on acellular network architecture, which is why mobile phones are often referred to as 'cell phones' in North America. (Full article...)

Asmartphone is amobile device that combines the functionality of a traditionalmobile phone with advancedcomputing capabilities. It typically has atouchscreen interface, allowing users to access a wide range of applications and services, such asweb browsing,email, andsocial media, as well asmultimedia playback andstreaming. Smartphones have built-incameras,GPS navigation, and support for various communication methods, including voice calls,text messaging, and internet-based messaging apps. Smartphones are distinguished from older-designfeature phones by their more advanced hardware capabilities and extensivemobile operating systems, access to theinternet, business applications,mobile payments, and multimedia functionality, including music, video,gaming,radio, andtelevision. (Full article...)

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Phone surveillance is the act of performingsurveillance on phone conversations,location tracking, and data monitoring of a phone. Before the era ofmobile phones, these used to refer to the tapping of phone lines via a method calledwiretapping. Wiretapping has now been replaced bysoftware that monitors the cell phones of users.

While mobile phone surveillance has been carried out by large organizations for a long time (e.g., to find clues of illegal activities), more and more of such surveillance is now carried out by individuals for personal reasons. For example, a parent may become a "text spy" to monitor a child's texting activity. This brings in the moral, ethical and legal question of who owns people'sprivacy. (Full article...)

List of selected articles
Telephony Telephone numbering plan Invention of the telephone Comparison of smartphones List of Android smartphones History of the telephone Dual-tone multi-frequency signaling Rotary dial Telephone switchboard Switchboard operator Direct distance dialing Signalling System No. 7 Telephone exchange Toll-free telephone number Call forwarding Cellular network Public switched telephone network Collect call Texting while driving Verizon New England 9-1-1 Enhanced 9-1-1 Bell System Bell Telephone Company AT&T Corporation Telephone keypad Phone hacking Landline Wide Area Telephone Service Answering machine Telephone exchange names Caller ID Telephone tapping Mobile phone tracking Mobile device forensics Plain old telephone service History of mobile phones Prepaid mobile phone Mobile phone use in schools Motorola DynaTAC Motorola StarTAC Breakup of the Bell System Verizon (mobile network) T-Mobile Problematic smartphone use Telefon Hírmondó Telephone newspaper Pocket dialing Model 102 telephone Telephone number Push-button telephone Phreaking Western Electric Voice over IP Phoneword Bell Memorial Alexander Graham Bell honors and tributes Alexander Graham Bell National Historic Site Bell Canada Business telephone system The Telephone Cases Hotline Prairie Grove Airlight Outdoor Telephone Booth Premium-rate telephone number Dirtbox (cell phone) Text messaging 300-page iPhone bill Cell site Voicemail iOS Tip and ring Phubbing Yellow pages Telephone booth Smartphone zombie Mobile phones and driving safety Qualcomm Snapdragon Project Ara Motorola Mobility Android (operating system) iPhone 6 Missed call Samsung Galaxy S4 LG G2 TouchWave iPhone 5 Police box Red telephone box Call centre Robocall National Do Not Call Registry Telephone Preference Service National Do Not Call List Telemarketing KX telephone boxes Mojave phone booth Modem Fax Harmonised service of social value Telephone counseling Crisis hotline Caller ID spoofing

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Two decades of evolution of mobile phones, from a 1992Motorola DynaTAC 8000X to the 2014iPhone 6 Plus

Beyond traditionalvoice communication, digital mobile phones have evolved to support a wide range of additional services. These includetext messaging,multimedia messaging,email, andinternet access (viaLTE,5G NR orWi-Fi), as well as short-range wireless technologies likeBluetooth,infrared, andultra-wideband (UWB).

Mobile phones also support a variety ofmultimedia capabilities, such asdigital photography,video recording, andgaming. In addition, they enable multimedia playback andstreaming, including video content, as well asradio andtelevision streaming. Furthermore, mobile phones offersatellite-based services, such asnavigation andmessaging, as well as business applications andpayment solutions (vianear-field communication (NFC)). (Full article...)

List of phone types
Payphone Courtesy telephone Emergency telephone Secure telephone Smartphone Satellite phone Phablet Car phone Windows Phone Camera phone Feature phone VoIP phone iPhone Tin can telephone Sound-powered telephone Grillo telephone Golden telephone Reis telephone Cordless telephone Shoe phone Field telephone IBM Simon Mobile radio telephone Foldable smartphone Modular smartphone Prepaid mobile phone

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UK, Ireland, and NZ audible ringing tone

A ringing tone from the United Kingdom, Ireland, and New Zealand

Australian ringing tone

Australia audible ringing tone

European ringing tone

A European ringing tone per ETSI standard

Japanese ringing tone

French ringing tone

A French ringing tone

North American ringing tone

Audible ringing tone from North America

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Ringing tone (audible ringing, alsoringback tone) is asignaling tone intelecommunication that is heard by the originator of atelephone call while the destinationterminal is alerting the receiving party. The tone is typically a repeated cadence similar to a traditionalpower ringing signal (ringtone), but is usually not played synchronously. Various telecommunication groups, such as theBell System and theGeneral Post Office (GPO) developed standards, in part taken over by theEuropean Telecommunications Standards Institute (ETSI) and other standards bodies. With moderncell phone andsmartphone technology ringing tone can be customized and even used for advertising. (Full article...)

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List articles

Related portals

General images -show new batch

The following are images from various telephone-related articles on Wikipedia.

Image 1"Device options" menu of Samsung Mobile'sTouchWiz user interface as of 2013, accessed by holding the power button for a second (fromSmartphone)
Image 2A text message (SMS) (fromMobile phone)
Image 3Top of cellular telephone tower (fromHistory of the telephone)
Image 4Active mobile broadband subscriptions per 100 inhabitants (fromMobile phone)
Image 5Replica of thetelettrofono atMuseo Nazionale Scienza e Tecnologia Leonardo da Vinci ofMilan,Italy, invented byAntonio Meucci and credited by several sources as the first telephone. (fromHistory of the telephone)
Image 6Martin Cooper of Motorola, shown here in a 2007 reenactment, made the first publicized handheld mobile phone call on a prototype DynaTAC model on 3 April 1973. (fromMobile phone)
Image 7ANew York City driver holding two phones (fromSmartphone)
Image 8IBM Simon and charging base (1994) (fromSmartphone)
Image 9AMeizu MX4 withFlyme OS (fromSmartphone)
Image 10TheSamsung Galaxy S24 Ultra has anartificial intelligence-powered feature (fromSmartphone)
Image 11Scrapped mobile phones (fromMobile phone)
Image 12TheMotorola DynaTAC 8000X. In 1983, it became the first commercially available handheld cellular mobile phone. (fromMobile phone)
Image 13Optical track pad sensor of anHTC Legend, 2010. (fromSmartphone)
Image 14Actor portrayingAlexander Graham Bell in a 1932 silent film. Shows Bell's second telephone transmitter (microphone), invented 1876 and first displayed at the Centennial Exposition, Philadelphia. (fromHistory of the telephone)
Image 15Mobile phone subscribers per 100 inhabitants. 2014 figure is estimated. (fromMobile phone)
Image 16Philipp Reis, 1861, constructed the first telephone, today called theReis telephone. (fromHistory of the telephone)
Image 17Smartphone with infrared transmitter on top for use as remote control (fromSmartphone)
Image 18AMoto G7 Power; its display uses a tall aspect ratio and includes a "notch". (fromSmartphone)
Image 19A user consulting a mapping app on a phone (fromSmartphone)
Image 20The master telephone patent granted to Bell, 174465, March 7, 1876 (fromHistory of the telephone)
Image 21Tivadar Puskás proposed thetelephone switchboard exchange in 1876. (fromHistory of the telephone)
Image 22Mobile payment system. (fromSmartphone)
Image 23Antonio Meucci, 1854, developed a voice-communication apparatus that several sources credit as the firsttelephone. (fromHistory of the telephone)
Image 24A Germanrotary dial telephone, theW48 (fromHistory of the telephone)
Image 25TheHTC Desire, a 2010 smartphone withoptical trackpad and search button (fromSmartphone)
Image 26Typical mobile phone mini-SIM card (fromMobile phone)
Image 27Cellular networks work by only reusing radio frequencies (in this example frequencies f1–f4) in non adjacent cells to avoid interference (fromMobile phone)
Image 28A sign in the US restricting cell phone use to certain times of day (no cell phone use between 7:30–9:00 am and 2:00–4:15 pm) (fromMobile phone)
Image 29Receiver schematic, c.1906 (fromHistory of the telephone)
Image 30Android smartphones (fromMobile phone)
Image 31TheLG Prada with a large capacitive touchscreen introduced in 2006 (fromSmartphone)
Image 32A sign alongBellaire Boulevard inSouthside Place, Texas (Greater Houston) states that using mobile phones while driving is prohibited from 7:30 am to 9:00 am and from 2:00 pm to 4:15 pm. (fromSmartphone)
Image 33Mobile payment system (fromMobile phone)
Image 341896 telephone (Sweden) (fromHistory of the telephone)
Image 35The originalApple iPhone; following its introduction in 2007, the common smartphone form factor shifted to large touchscreen software interfaces without physical keypads (fromSmartphone)
Image 36Private conversation, 1910 (fromHistory of the telephone)
Image 37Personal Handy-phone System mobiles and modems, 1997–2003 (fromMobile phone)
Image 38Mobile/desktop convergence: theLibrem 5 smartphone can be used as a basic desktop computer (fromSmartphone)
Image 39Dupuis and Haug during a GSM meeting in Belgium, April 1992 (fromMobile phone)
Image 40Inserted memory and SIM cards (fromSmartphone)
Image 41This layout of the camera viewfinder was first introduced by Apple with iOS 7 in 2013. Towards the late 2010s, several other smartphone vendors have ditched their layouts and implemented variations of this layout. (fromSmartphone)
Image 42Xiaomi 13 Ultra featured aLeica Summicron camera system (fromSmartphone)
Image 43ANexus 6, anAndroid smartphone, displaying theMain Page of theEnglish Wikipedia (fromSmartphone)
Image 44A FrenchGower telephone of 1912 at theMusée des Arts et Métiers in Paris (fromHistory of the telephone)
Image 45Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876. (fromHistory of the telephone)
Image 46A 19th century acoustictin can or "lovers' telephone" (fromHistory of the telephone)
Image 47Historical marker commemorating the first telephone central office in New York State (1878) (fromHistory of the telephone)
Image 48A high-capacity portablebattery charger (power bank) (fromSmartphone)
Image 49Elisha Gray, 1876, designed a telephone using awater microphone in Highland Park, Illinois. (fromHistory of the telephone)
Image 50A driver using two handheld mobile phones at once (fromMobile phone)
Image 51E-waste inAgbogbloshie (fromSmartphone)
Image 52SeveralBlackBerry smartphones, which were highly popular in the mid-late 2000s (fromSmartphone)
Image 53ASamsung Galaxy S20 Plus, featuring a "hole-punch" camera (fromSmartphone)
Image 54Apple iPhonesmartphone (fromHistory of the telephone)
Image 55A smartphone touchscreen (fromSmartphone)
Image 56People using phones while walking (fromMobile phone)
Image 57Tooltip in Kiwi Browser, aGoogle Chromium derivative, reveals the full URL by hovering over thetab list using the stylus on aSamsung Galaxy Note 4. (fromSmartphone)
Image 58Two decades of evolution of mobile phones, from a 1992Motorola DynaTAC 8000X to the 2014iPhone 6 Plus (fromMobile phone)
Image 591917 wall telephone, open to show magneto and local battery (fromHistory of the telephone)
Image 60Thomas Edison invented thecarbon microphone which produced a strong telephone signal. (fromHistory of the telephone)
Image 61Reis's telephone around 1861, first device called telephone (fromHistory of the telephone)
Image 62Oppo Find X6 features software-based tuning co-developed withHasselblad (fromSmartphone)
Image 63The Nokia 9110 Communicator, opened for access to keyboard (fromSmartphone)
Image 64
Bell prototype telephone stamp
Centennial Issue of 1976
(fromHistory of the telephone)

Selected biography

Fleet in studio, 2008

Pat Trumble Fleet is an Americanvoice actress. Widely recognized for the tens of thousands of recordings she has made for US telephone companies such asAT&T,Verizon,Qwest, the formerBell System companies, and others since 1981, she is still most recognized as the person who says "AT&T" in the company'ssound trademark, which played prior to any operator assisted or credit card paid call, and on answer when calling AT&T customer service numbers.

She is also the voice for most "star" services (e.g.last-call return,call blocking, etc.) forAT&T local telephone companies, and the voice heard when making AT&T handled calls through1-800-CALL-ATT (225-5288) and through international AT&T access numbers such as USADirect. (Full article...)

List of selected biographies
Alexander Graham Bell Thomas Edison Innocenzo Manzetti Charles Bourseul Johann Philipp Reis Antonio Meucci Tivadar Puskás Douglas H. Ring W. Rae Young Martin Cooper (inventor) Thomas Cowherd Gardiner Greene Hubbard Anthony Pollok Thomas A. Watson Elisha Gray George Sweigert John Draper

Selected images

Image 1AWestern Electriccandlestick phone from the 1920s
Image 2Emergency telephones, on the Paris-Bordeaux railway line, Saint-Saviol station, Vienne, France
Image 3Push-button telephone
Image 4Automatic electricRotary dial telephone
Image 5A Funke + Huster telephone inside the Idrija Mine, Slovenia
Image 6Acoustic telephone ad, The Consolidated Telephone Co., Jersey City, New Jersey, 1886
Image 7Historical telephone with the German imperial eagle and the heraldic shield of the House of Hohenzollern dynasty; Vollmer's Mill, Seebach, Baden-Württemberg, Germany
Image 8AppleiPhones
Image 9TheAUTOVON was a worldwide American military telephone system that was built starting in 1963.
Image 10Wooden wall telephone with a hand-crankedmagneto generator
Image 11Track-side emergency brake andemergency telephones at the platform of the metro stationAspern Nord,Donaustadt, Vienna, Austria
Image 12A Northern Electric telephone, model number N415H, circa 1950 (probably)
Image 13Mailbox and public telephone in Haßfurt, Germany
Image 14ABell Canadapayphone with digital display
Image 15Landlinecall blocking in use
Image 16A historictelephone booth in Skansen, Stockholm
Image 17An Italiangettone telefonico (telephone token) from 1945, which was used in Italianphone booths
Image 18Photograph of the interior of thePrairie Grove Airlight Outdoor Telephone Booth in Prairie Grove, Arkansas, which is listed on theNational Register of Historic Places
Image 19Telephone booth box art outside the Tower of London, 2012
Image 20Rotary dial telephone, probably from Belgium; the circuit diagram inside is in Dutch and French
Image 21A traditional North Americanrotary phone dial. The associative lettering was originally used for dialingnamed exchanges but was kept because it facilitated memorization of telephone numbers.
Image 22Public telephone, Bucharest, Romania
Image 23Foldable smartphones
Image 24Acordless phone
Image 25Android smartphones
Image 26An example of a K6, the most commonred telephone box model, photographed in London in 2012
Image 27Apolice box outsideEarl's Court tube station in London, built in 1996 and based on the 1929 Gilbert Mackenzie Trench design
Image 28Rotary dial telephone, probably from Belgium; the circuit diagram inside is in Dutch and French

Topics

v t e Telephony
Types	Landline Cable telephony Mobile phone Satellite phone Photophone
Accessories	Answering machine Caller ID
Connectivity	Cable protection system Communications satellites Fibre-optical Free-space optical ISDN Mobile phone signal POTS PSTN Submarine cables VoIP
Calls	Missed call Misdialed call Nuisance call Phone tag
Applications	Fax transmission Telephone calls Telephone newspapers Théâtrophone Video calls
Telecommunication portalTelephones portal

Mobile phones

Mobile
networks,
protocols

Channel capacity Frequencies Multi-band Network operator list Roaming Signal SIM card dual SIM eSIM SIM lock Standards comparison Tethering VoIP WAP XHTML-MP
Generations	Analogue: 0G 1G Digital: 2G 3G adoption 3.5G 4G 4.5G 5G 6G

General
operation

Mobile
devices

Manufacturers 3D phone Camera phone Car phone Feature phone Projector phone Satellite phone Smartphone
Form factors	Bar Flip Phablet Slider Slate Smartwatch Fold
Smartphones	Android devices rooting BlackBerry 10 iPhone iOS jailbreaking Open-source mobile phones Symbian devices Windows Phone devices

Mobile
specific
software

Apps	Development Distribution Management Cloud computing
Commerce	Banking Marketing advertising campaigns Payments contactless donating Ticketing
Content	Blogging Email Gambling Gaming Health Instant messaging Learning Music News Search local Social address book Television

Culture

Environment
and health

Law

v t e Emergency telephone numbers
Emergency telephone Harmonised service of social value
000 (Australia) 102 (India) 106 (Australia) 108 (India) 110 (Iran, Japan, China) 111 (New Zealand) 112 (Europe and others, worldwideGSM mobile networks) 119 (parts of Asia and Jamaica) 120 (China) 122 (Austria, Egypt, and Bosnia and Herzegovina) 123 (Colombia, Egypt) 128 (Mercosur member states) 190 (Brazil) 911 (Iraq, North AmericaE-911 system,Philippines) 988 (North America Suicide & Crisis Lifeline) 999 (Bangladesh, UK and others) 1122 (Pakistan)
Telephones portal Telecommunication portal List article Category Wikimedia Commons

Cellular network standards

List of mobile phone generations

0G radio telephones (1946)

1G (1979)

AMPS family	AMPS - N-AMPS TACS - ETACS
Other	NMT C-450 Hicap Mobitex DataTAC CT1 RTMI

2G (1991)

GSM/3GPP family	GSM CSD - HSCSD
3GPP2 family	cdmaOne (IS-95)
AMPS family	D-AMPS (IS-54 and IS-136)
Other	CDPD iDEN PDC PHS CT2

2G transitional
(2.5G, 2.75G, 2.9G)

GSM/3GPP family	GPRS EDGE/EGPRS - Evolved EDGE
3GPP2 family	CDMA2000 1X (TIA/EIA/IS-2000) CDMA2000 1X Advanced
Other	WiDEN DECT

3G (1998)
IMT-2000 (2001)

3GPP family	UMTS UTRA-FDD / W-CDMA FOMA UTRA-TDD LCR / TD-SCDMA UTRA-TDD HCR / TD-CDMA
3GPP2 family	CDMA2000 1xEV-DO Release 0 (TIA/IS-856)

3G transitional
(3.5G, 3.75G, 3.9G)

3GPP family	HSPA HSDPA HSUPA HSPA+ DC-HSDPA LTE (E-UTRA)
3GPP2 family	CDMA20001xEV-DO Revision A (TIA/EIA/IS-856-A) EV-DO Revision B (TIA/EIA/IS-856-B) EV-DO Revision C
IEEE family	Mobile WiMAX IEEE 802.16e Flash-OFDM iBurst (IEEE 802.20) WiBro
ETSI family	HiperMAN

4G (2009)
IMT Advanced (2013)

3GPP family	LTE Advanced (E-UTRA) LTE Advanced Pro (4.5G/4.9G)
IEEE family	WiMAX (IEEE 802.16m) WiMax 2.1 WiBro

5G (2018)
IMT-2020 (2021)

3GPP family	5G NR 5G-Advanced (5.5G) NR-IIoT LTE-M NB-IoT
Other	DECT-5G

Telecommunication portal telephone icon

Telephones portal

Subcategories

Select [►] to view subcategories

Telephony

Telecommunications systems

Bulletin board systems

Call centre

Call recording

Telephone crimes

Digital subscriber line

Directories

Telephony equipment

Telephone exchanges

Fixed mobile convergence

History of the telephone

Information by telephone

Telephony in popular culture

Privacy of telecommunications

Telephone voiceover talent

Telephony stubs

Select [►] to view subcategories

Mobile phones

Mobile phones by company

Active noise control mobile phones

Mobile telephone broadcasting

Mobile phone companies

Mobile phone culture

History of mobile phones

Mobile phone industry

Lists of mobile phones

Mobile device management

Mobile phones with 4K video recording

Mobile phones with 8K video recording

Mobile phones with an integrated hardware keyboard

Mobile phones with infrared transmitter

Mobile phones with mechanical zoom lens

Mobile phones with pressure-sensitive touch screen

Mobile phones with self-capacitive touch screen layer

Mobile phones with stylus

Mobile phones with user-replaceable battery

Mobile phones with multiple rear cameras

Open-source mobile phones

Mobile phone recycling

Mobile phones by shape

Smartphones

Mobile software

Solar-powered mobile phones

Mobile phone standards

Mobile phones with stereo camera

Watch phones

Works about mobile phones

Mobile phones by year of introduction

Mobile phone stubs

Moved

Select [►] to view subcategories

Smartphones

Smartphones by brand

Smartphones by operating system

CyanogenMod

Discontinued smartphones

N-Gage (service) compatible devices

Phablets

S60 (software platform)

Smartphone operating systems

Smartphone patent wars

Videotelephony

Here are some tasks awaiting attention:

Stubs : E x p a n d telephone stub articles:Telephony stubs • Mobile phone stubs • Telephone number stubs

WikiProjects

WikiProject Telecommunications
Bell System task force

WikiProject Electronics

Telephones in the news

18 March 2025 –February 2025 Putin–Trump call: U.S. President Donald Trump andRussian President Vladimir Putin agree to an immediateenergy infrastructure ceasefire inUkraine during a phone call, with additional negotiations to begin immediately on a permanent settlement of the conflict. Putin stated that the end of all foreign military and intelligence support to Ukraine would be one condition of such a settlement.(ABC News)
6 March 2025 –Second Trump tariffs: Following phone calls betweenUnited States President Donald Trump,Mexican President Claudia Sheinbaum, andCanadian Prime Minister Justin Trudeau, Trump announces a pause on some tariffs on bothCanada andMexico until April 2. Sheinbaum states that Mexico will collaborate with theUnited States onmigration and security issues, including controllingcross-border fentanyl smuggling.(ABC News)(DW)(CBC)