3G - Wikipedia 3G For other uses, see 3G ( disambiguation ). This article has multiple issues. Please help improve it or discuss these issues on the talk page. ( Learn how and when to remove these template messages ) This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details. The talk page may contain suggestions. ( October 2011 ) This article needs to be updated. Please update this article to reflect recent events or newly available information. ( April 2016 ) 3G, standing for third generation, is the third generation of wireless mobile telecommunications technology. This is based on a set of standards used for mobile devices and mobile telecommunications use services and networks that comply with the International Mobile Telecommunications - 2000 ( IMT - 2000 ) specifications by the International Telecommunication Union. 3G finds application in wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls and mobile TV. 3G telecommunication networks support services that provide an information transfer rate of at least 2 Mbit / s. Later 3G releases, often denoted 3.5 G and 3.75 G, also provide mobile broadband access of several Mbit / s to smartphones and mobile modems in laptop computers. This ensures it can be applied to wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls and mobile TV technologies. A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1981 / 1982. Each generation is characterized by new frequency bands, higher data rates and non -- backward - compatible transmission technology. The first 3G networks were introduced in 1998 and fourth generation 4G networks in 2008. Contents 1 Overview 1.1 Break - up of 3G systems 2 History 3 Adoption 3.1 Market penetration 4 Patents 5 Features 5.1 Data rates 5.2 Security 5.3 Applications of 3G 6 Evolution 7 See also 8 References 9 External links Overview Several telecommunications companies market wireless mobile Internet services as 3G, indicating that the advertised service is provided over a 3G wireless network. Services advertised as 3G are required to meet IMT - 2000 technical standards, including standards for reliability and speed ( data transfer rates ). To meet the IMT - 2000 standards, a system is required to provide peak data rates of at least 200 kbit / s ( about 0.2 Mbit / s ). However, many services advertised as 3G provide higher speed than the minimum technical requirements for a 3G service. Recent 3G releases, often denoted 3.5 G and 3.75 G, also provide mobile broadband access of several Mbit / s to smartphones and mobile modems in laptop computers. The following standards are typically branded 3G : the UMTS ( Universal Mobile Telecommunications Service ) system, first offered in 2001, standardized by 3GPP, used primarily in Europe, Japan, China ( however with a different radio interface ) and other regions predominated by GSM ( Global Systems for Mobile ) 2G system infrastructure. The cell phones are typically UMTS and GSM hybrids. Several radio interfaces are offered, sharing the same infrastructure : The original and most widespread radio interface is called W - CDMA ( Wideband Code Division Multiple Access ). The TD - SCDMA radio interface was commercialized in 2009 and is only offered in China. The latest UMTS release, HSPA+, can provide peak data rates up to 56 Mbit / s in the downlink in theory ( 28 Mbit / s in existing services ) and 22 Mbit / s in the uplink. the CDMA2000 system, first offered in 2002, standardized by 3GPP2, used especially in North America and South Korea, sharing infrastructure with the IS - 95 2G standard. The cell phones are typically CDMA2000 and IS - 95 hybrids. The latest release EVDO Rev B offers peak rates of 14.7 Mbit / s downstream. The above systems and radio interfaces are based on spread spectrum radio transmission technology. While the GSM EDGE standard ( `` 2.9 G '' ), DECT cordless phones and Mobile WiMAX standards formally also fulfill the IMT - 2000 requirements and are approved as 3G standards by ITU, these are typically not branded 3G, and are based on completely different technologies. The following common standards comply with the IMT2000 / 3G standard : EDGE, a revision by the 3GPP organization to the older 2G GSM based transmission methods, utilizing the same switching nodes, base station sites and frequencies as GPRS, but new base station and cellphone RF circuits. It is based on the three times as efficient 8PSK modulation scheme as supplement to the original GMSK modulation scheme. EDGE is still used extensively due to its ease of upgrade from existing 2G GSM infrastructure and cell - phones. EDGE combined with the GPRS 2.5 G technology is called EGPRS, and allows peak data rates in the order of 200 kbit / s, just as the original UMTS WCDMA versions, and thus formally fulfills the IMT2000 requirements on 3G systems. However, in practice EDGE is seldom marketed as a 3G system, but a 2.9 G system. EDGE shows slightly better system spectral efficiency than the original UMTS and CDMA2000 systems, but it is difficult to reach much higher peak data rates due to the limited GSM spectral bandwidth of 200 kHz, and it is thus a dead end. EDGE was also a mode in the IS - 136 TDMA system, today ceased. Evolved EDGE, the latest revision, has peaks of 1 Mbit / s downstream and 400 kbit / s upstream, but is not commercially used. The Universal Mobile Telecommunications System, created and revised by the 3GPP. The family is a full revision from GSM in terms of encoding methods and hardware, although some GSM sites can be retrofitted to broadcast in the UMTS / W - CDMA format. W - CDMA is the most common deployment, commonly operated on the 2,100 MHz band. A few others use the 850, 900 and 1,900 MHz bands. HSPA is an amalgamation of several upgrades to the original W - CDMA standard and offers speeds of 14.4 Mbit / s down and 5.76 Mbit / s up. HSPA is backward - compatible with and uses the same frequencies as W - CDMA. HSPA+, a further revision and upgrade of HSPA, can provide theoretical peak data rates up to 168 Mbit / s in the downlink and 22 Mbit / s in the uplink, using a combination of air interface improvements as well as multi-carrier HSPA and MIMO. Technically though, MIMO and DC - HSPA can be used without the `` + '' enhancements of HSPA+ The CDMA2000 system, or IS - 2000, including CDMA2000 1x and CDMA2000 High Rate Packet Data ( or EVDO ), standardized by 3GPP2 ( differing from the 3GPP ), evolving from the original IS - 95 CDMA system, is used especially in North America, China, India, Pakistan, Japan, South Korea, Southeast Asia, Europe and Africa. CDMA2000 1x Rev. E has an increased voice capacity ( in excess of three times ) compared to Rev. 0 EVDO Rev. B offers downstream peak rates of 14.7 Mbit / s while Rev. C enhanced existing and new terminal user experience. While DECT cordless phones and Mobile WiMAX standards formally also fulfill the IMT - 2000 requirements, they are not usually considered due to their rarity and unsuitability for usage with mobile phones. Break - up of 3G systems The 3G ( UMTS and CDMA2000 ) research and development projects started in 1992. In 1999, ITU approved five radio interfaces for IMT - 2000 as a part of the ITU - R M. 1457 Recommendation ; WiMAX was added in 2007. There are evolutionary standards ( EDGE and CDMA ) that are backward - compatible extensions to pre-existing 2G networks as well as revolutionary standards that require all - new network hardware and frequency allocations. The cell phones utilise UMTS in combination with 2G GSM standards and bandwidths, but do not support EDGE. The latter group is the UMTS family, which consists of standards developed for IMT - 2000, as well as the independently developed standards DECT and WiMAX, which were included because they fit the IMT - 2000 definition. While EDGE fulfills the 3G specifications, most GSM / UMTS phones report EDGE ( `` 2.75 G '' ) and UMTS ( `` 3G '' ) functionality. History 3G technology was the result of research and development work carried out by the International Telecommunication Union ( ITU ) in the early 1980s. 3G specifications and standards were developed in fifteen years. The technical specifications were made available to the public under the name IMT - 2000. The communication spectrum between 400 MHz to 3 GHz ws allocated for 3G. Both the government and communication companies approved the 3G standard. The first pre-commercial 3G network was launched by NTT DoCoMo in Japan in 1998, branded as FOMA. It was first available in May 2001 as a pre-release ( test ) of W - CDMA technology. The first commercial launch of 3G was also by NTT DoCoMo in Japan on 1 October 2001, although it was initially somewhat limited in scope ; broader availability of the system was delayed by apparent concerns over its reliability. The first European pre-commercial network was an UMTS network on the Isle of Man by Manx Telecom, the operator then owned by British Telecom, and the first commercial network ( also UMTS based W - CDMA ) in Europe was opened for business by Telenor in December 2001 with no commercial handsets and thus no paying customers. The first network to go commercially live was by SK Telecom in South Korea on the CDMA - based 1xEV - DO technology in January 2002. By May 2002 the second South Korean 3G network was by KT on EV - DO and thus the South Koreans were the first to see competition among 3G operators. The first commercial United States 3G network was by Monet Mobile Networks, on CDMA2000 1x EV - DO technology, but this network provider later shut down operations. The second 3G network operator in the USA was Verizon Wireless in July 2002 also on CDMA2000 1x EV - DO. AT&T Mobility was also a true 3G UMTS network, having completed its upgrade of the 3G network to HSUPA. The first commercial United Kingdom 3G network was started by Hutchison Telecom which was originally behind Orange S.A.. In 2003, it announced first commercial third generation or 3G mobile phone network in the UK. The first pre-commercial demonstration network in the southern hemisphere was built in Adelaide, South Australia by m.Net Corporation in February 2002 using UMTS on 2,100 MHz. This was a demonstration network for the 2002 IT World Congress. The first commercial 3G network was launched by Hutchison Telecommunications branded as Three or `` 3 '' in June 2003. Emtel launched the first 3G network in Africa. Adoption Nepal Telecom adopted 3G Service for the first time in Asia. However its 3G was relatively slow to be adopted in Nepal. In some instances, 3G networks do not use the same radio frequencies as 2G so mobile operators must build entirely new networks and license entirely new frequencies, especially so to achieve high data transmission rates. Other countries ' delays were due to the expenses of upgrading transmission hardware, especially for UMTS, whose deployment required the replacement of most broadcast towers. Due to these issues and difficulties with deployment, many carriers were not able to or delayed acquisition of these updated capabilities. In December 2007, 190 3G networks were operating in 40 countries and 154 HSDPA networks were operating in 71 countries, according to the Global Mobile Suppliers Association ( GSA ). In Asia, Europe, Canada and the USA, telecommunication companies use W - CDMA technology with the support of around 100 terminal designs to operate 3G mobile networks. Roll - out of 3G networks was delayed in some countries by the enormous costs of additional spectrum licensing fees. The license fees in some European countries were particularly high, bolstered by government auctions of a limited number of licenses and sealed bid auctions, and initial excitement over 3G 's potential. This led to a telecoms crash that ran concurrently with similar crashes in the fibre - optic and dot.com fields. The 3G standard is perhaps well known because of a massive expansion of the mobile communications market post-2G and advances of the consumer mobile phone. An especially notable development during this time is the smartphone ( for example, the iPhone, and the Android family ), combining the abilities of a PDA with a mobile phone, leading to widespread demand for mobile internet connectivity. 3G has also introduced the term `` mobile broadband '' because its speed and capability make it a viable alternative for internet browsing, and USB Modems connecting to 3G networks are becoming increasingly common. Market penetration By June 2007, the 200 millionth 3G subscriber had been connected of which 10 million were in Nepal and 8.2 million in India. This 200 millionth is only 6.7 % of the 3 billion mobile phone subscriptions worldwide. ( When counting CDMA2000 1x RTT customers -- max bitrate 72 % of the 200kbit / s which defines 3G -- the total size of the nearly - 3G subscriber base was 475 million as of June 2007, which was 15.8 % of all subscribers worldwide. ) In the countries where 3G was launched first -- Japan and South Korea -- 3G penetration is over 70 %. In Europe the leading country for 3G penetration is Italy with a third of its subscribers migrated to 3G. Other leading countries for 3G use include Nepal, UK, Austria, Australia and Singapore at the 32 % migration level. According to ITU estimates, as of Q4 2012 there were 2096 million active mobile - broadband subscribers worldwide out of a total of 6835 million subscribers -- this is just over 30 %. About half the mobile - broadband subscriptions are for subscribers in developed nations, 934 million out of 1600 million total, well over 50 %. Note however that there is a distinction between a phone with mobile - broadband connectivity and a smart phone with a large display and so on -- although according to the ITU and informatandm.com the USA has 321 million mobile subscriptions, including 256 million that are 3G or 4G, which is both 80 % of the subscriber base and 80 % of the USA population, according to ComScore just a year earlier in Q4 2011 only about 42 % of people surveyed in the USA reported they owned a smart phone. In Japan, 3G penetration was similar at about 81 %, but smart phone ownership was lower at about 17 %. In China, there were 486.5 million 3G subscribers in June 2014, in a population of 1,385,566,537 ( 2013 UN estimate ). Patents It has been estimated that there are almost 8,000 patents declared essential ( FRAND ) related to the 483 technical specifications which form the 3GPP and 3GPP2 standards. Twelve companies accounted in 2004 for 90 % of the patents ( Qualcomm, Ericsson, Nokia, Motorola, Philips, NTT DoCoMo, Siemens, Mitsubishi, Fujitsu, Hitachi, InterDigital, and Matsushita ). Even then, some patents essential to 3G might have not been declared by their patent holders. It is believed that Nortel and Lucent have undisclosed patents essential to these standards. Furthermore, the existing 3G Patent Platform Partnership pool has little impact on FRAND protection, because it excludes the four largest patents owners for 3G. Features Data rates ITU has not provided a clear definition of the data rate that users can expect from 3G equipment or providers. Thus users sold 3G service may not be able to point to a standard and say that the rates it specifies are not being met. While stating in commentary that `` it is expected that IMT - 2000 will provide higher transmission rates : a minimum data rate of 2 Mbit / s for stationary or walking users, and 348 kbit / s in a moving vehicle, '' the ITU does not actually clearly specify minimum required rates, nor required average rates, nor what modes of the interfaces qualify as 3G, so various data rates are sold as ' 3G ' in the market. In market implementation, 3G downlink data speeds defined by telecom service providers vary depending on the underlying technology deployed ; up to 384kbit / s for WCDMA, up to 7.2 Mbit / sec for HSPA and a theoretical maximum of 21.6 Mbit / s for HSPA+ ( technically 3.5 G, but usually clubbed under the tradename of 3G ). Compare data speeds with 3.5 G and 4G. Security See also : Mobile security § Attacks based on the GSM networks 3G networks offer greater security than their 2G predecessors. By allowing the UE ( User Equipment ) to authenticate the network it is attaching to, the user can be sure the network is the intended one and not an impersonator. 3G networks use the KASUMI block cipher instead of the older A5 / 1 stream cipher. However, a number of serious weaknesses in the KASUMI cipher have been identified. In addition to the 3G network infrastructure security, end - to - end security is offered when application frameworks such as IMS are accessed, although this is not strictly a 3G property. Applications of 3G The bandwidth and location information available to 3G devices gives rise to applications not previously available to mobile phone users. Some of the applications are : Global Positioning System ( GPS ) Location - based services Mobile TV Telemedicine Video Conferencing Video on demand. Evolution Both 3GPP and 3GPP2 are working on extensions to 3G standard that are based on an all - IP network infrastructure and using advanced wireless technologies such as MIMO. These specifications already display features characteristic for IMT - Advanced ( 4G ), the successor of 3G. However, falling short of the bandwidth requirements for 4G ( which is 1 Gbit / s for stationary and 100 Mbit / s for mobile operation ), these standards are classified as 3.9 G or Pre-4G. 3GPP plans to meet the 4G goals with LTE Advanced, whereas Qualcomm has halted development of UMB in favour of the LTE family. On 14 December 2009, Telia Sonera announced in an official press release that `` We are very proud to be the first operator in the world to offer our customers 4G services. '' With the launch of their LTE network, initially they are offering pre-4G ( or beyond 3G ) services in Stockholm, Sweden and Oslo, Norway. See also List of mobile phone generations Mobile radio telephone ( also known as `` 0G '' ) Mobile broadband 1G 2G 4G 5G LTE ( telecommunication ) References Jump up ^ ITU. `` ITU Radiocommunication Assembly approves new developments for its 3G standards ''. press release. Archived from the original on 19 May 2009. Retrieved 1 June 2009. Jump up ^ `` A Brand New Mobile Millennium Ericsson / CATT / DoCoMo jointly demonstrate pioneering W - CDMA technology at PT / Wireless Press Center NTT DOCOMO Global ''. Nttdocomo.com. 9 November 1999. Retrieved 30 October 2012. Jump up ^ `` World 's first 3G launch on 1 October severely restricted ( hktdc.com ) ''. Jump up ^ `` broadbandmag.co.uk/3G grinds to a start ''. Jump up ^ `` DoCoMo Delays 3G Launch ''. Wired. 24 April 2001. Jump up ^ `` 3G in UK ''. 3g.co.uk. Jump up ^ `` About Hutchison ''. Hutchison Telecommunications ( Australia ) Limited. 11 June 2008. Retrieved 2012 - 04 - 07. Jump up ^ `` Plus 8 Star presentation, `` Is 3G a Dog or a Demon -- Hints from 7 years of 3G Hype in Asia '' ``. Plus8star.com. 11 June 2008. Retrieved 2010 - 09 - 06. ^ Jump up to : `` Global mobile statistics 2013 Part A : Mobile subscribers ; handset market share ; mobile operators ''. mobiThinking. May 2013. Retrieved 2013 - 10 - 15. Jump up ^ `` The 100 million club : the top 10 mobile markets by number of mobile subscriptions ''. mobiThinking. 2012 - 12 - 13. Retrieved 2013 - 10 - 15. Jump up ^ Steven Millward ( 2014 - 07 - 29 ). `` China now has 486.5 million 3G subscribers, but only 14 million on new 4G network ''. Tech In Asia. Retrieved 2014 - 08 - 04. Jump up ^ `` 3G CELLULAR STANDARDS AND PATENTS ''. engpaper.com. 13 June 2005. Retrieved 2012 - 06 - 24. ^ Jump up to : David J. Goodman ( 13 June 2005 ). `` 3G CELLULAR STANDARDS AND PATENTS '' ( PDF ). IEEE Wireless com. Polytechnic Institute of New York University. Retrieved 2012 - 06 - 24. Jump up ^ `` Study on the Interplay between Standards and Intellectual Property Rights ( IPRs ) '' ( PDF ). European Commission. 18 July 2009. Retrieved 2012 - 06 - 24. Pools that cover only a fraction of the actual IPR for a standard are not very useful. It is essential that the large licensees sign up. Examples of pools that have little impact are the 3G Licensing pool ( which excludes the four largest IPR owners for 3G ) and the 802.11 pool by ViaLicensing. Jump up ^ `` Possible ' showstoppers ' shadow 3G patent pool ''. eetimes.com. 21 May 1999. Retrieved 2012 - 06 - 24. Even so, Qualcomm ( San Diego ) is still a wild card in the patent - pooling effort. Qualcomm was a member of the UMTS group when it was formed in February 1998, but deactivated its membership last September. Jump up ^ `` Cellular Standards for the Third Generation ''. ITU. 1 December 2005. Archived from the original on 24 May 2008. Jump up ^ `` Security for the Third Generation ( 3G ) Mobile System '' ( PDF ). Network Systems & Security Technologies. Jump up ^ Qualcomm halts UMB project, Reuters, 13 November 2008 Jump up ^ `` first in the world with 4G services ''. TeliaSonera. 14 December 2009. Retrieved 2010 - 09 - 06. External links Verizon has quietly stopped throttling unlimited 3G data Wikimedia Commons has media related to 3G. Preceded by 2nd Generation ( 2G ) Mobile Telephony Generations Succeeded by 4th Generation ( 4G ) Cellular network standards List of mobile phone generations 0G ( radio telephones ) MTS MTA - MTB - MTC - MTD IMTS AMTS OLT Autoradiopuhelin B - Netz Altai AMR 1G ( 1985 ) AMPS family AMPS ( TIA / EIA / IS - 3, ANSI / TIA / EIA - 553 ) N - AMPS ( TIA / EIA / IS - 91 ) TACS ETACS Other NMT C - 450 Hicap Mobitex DataTAC 2G ( 1992 ) GSM / 3GPP family GSM CSD HSCSD 3GPP2 family cdmaOne ( TIA / EIA / IS - 95 and ANSI - J - STD 008 ) AMPS family D - AMPS ( IS - 54 and IS - 136 ) Other CDPD iDEN PDC PHS 2G transitional ( 2.5 G, 2.75 G ) GSM / 3GPP family GPRS EDGE / EGPRS ( UWC - 136 ) 3GPP2 family CDMA2000 1X ( TIA / EIA / IS - 2000 ) CDMA2000 1X Advanced Other WiDEN 3G ( 2003 ) 3GPP family UMTS UTRA - FDD / W - CDMA UTRA - TDD LCR / TD - SCDMA UTRA - TDD HCR / TD - CDMA 3GPP2 family CDMA2000 1xEV - DO Release 0 ( TIA / IS - 856 ) 3G transitional ( 3.5 G, 3.75 G, 3.9 G ) 3GPP family HSPA HSDPA HSUPA HSPA+ LTE ( E-UTRA ) 3GPP2 family CDMA2000 1xEV - 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 802.16 e Flash - OFDM iBurst IEEE 802.20 4G ( 2013 ) ( IMT Advanced ) 3GPP family LTE Advanced ( E-UTRA ) LTE Advanced Pro ( 4.5 G Pro / pre-5G / 4.9 G ) IEEE family WiMAX ( IEEE 802.16 m ) Under development 5G ( 2020 ) Related articles Cellular networks Mobile telephony History List of standards Comparison of standards Channel access methods Spectral efficiency comparison table Cellular frequencies ( Bands : GSM UMTS LTE ) Mobile broadband NGMN Alliance MIMO VoLTE Mobile phones General Features GSM services History Operating system Security Telephony airplane mode Text messaging SMS MMS Spam Tracking Web browsing HTML5 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 Charms Comics Dating Japanese culture Novels Ringtones silent mode Selfie Txtspk Wallpaper Devices Manufacturers 3D phone Camera phone Car phone Feature phone Projector phone Satellite phone Smartphone SIM lock Form factors Bar Flip Phablet Slider Smartwatch Smartphones Android devices rooting BlackBerry 10 iPhone iOS jailbreaking Open - source mobile phones Symbian devices Windows Phone devices Environment and health BlackBerry thumb Driving safety Electronic waste External power supply Phantom vibration syndrome Radiation and health Recycling Law Carrier IQ Use restrictions while driving Legality of recording by civilians Photography and the law Telephone tapping Texting while driving Mobile phones in prison Networking Channel capacity Frequencies Multi-band Network operator list Roaming Signal SIM ( dual SIM ) Standards comparison Tethering VoIP WAP XHTML - MP Generations 0G 1G 2G 3G adoption 3.5 G 4G 4.5 G 5G Telecommunications History Beacon Broadcasting Cable protection system Cable TV Communications satellite Computer network Drums Electrical telegraph Fax Heliographs Hydraulic telegraph Internet Mass media Mobile phone Optical telecommunication Optical telegraphy Pager Photophone Prepaid mobile phone Radio Radiotelephone Satellite communications Semaphore Smartphone Smoke signals Telecommunications history Telautograph Telegraphy Teleprinter ( teletype ) Telephone The Telephone Cases Television Timeline of communication technology Undersea telegraph line Videoconferencing Videophone Videotelephony Whistled language Pioneers Edwin Howard Armstrong John Logie Baird Paul Baran Alexander Graham Bell Tim Berners - Lee Jagadish Chandra Bose Vint Cerf Claude Chappe Donald Davies Lee de Forest Philo Farnsworth Reginald Fessenden Elisha Gray Erna Schneider Hoover Charles K. Kao Hedy Lamarr Innocenzo Manzetti Guglielmo Marconi Antonio Meucci Radia Perlman Alexander Stepanovich Popov Johann Philipp Reis Nikola Tesla Camille Tissot Alfred Vail Charles Wheatstone Vladimir K. Zworykin Transmission media Characteristic impedance Coaxial cable Electromagnetic radiation Electrical cable Free - space optical communication Heaviside condition Loading coil Molecular communication Optical fiber Telegrapher 's equations Network topology and switching Links Nodes Terminal node Network switching ( circuit packet ) Telephone exchange Multiplexing Space - division Frequency - division Time - division Polarization - division Orbital angular - momentum Code - division Networks ARPANET BITNET Cellular network Computer CYCLADES Ethernet FidoNet Internet ISDN LAN Mobile NGN NPL network Public Switched Telephone Radio Telecommunications equipment Television Telex WAN Wireless World Wide Web Portal Retrieved from `` https://en.wikipedia.org/w/index.php?title=3G&oldid=800606006 '' Categories : Software - defined radio Mobile telecommunications Videotelephony Japanese inventions Hidden categories : Wikipedia articles that are too technical from October 2011 All articles that are too technical Articles needing expert attention from October 2011 All articles needing expert attention Wikipedia articles in need of updating from April 2016 All Wikipedia articles in need of updating Use dmy dates from April 2013 All articles with vague or ambiguous time Vague or ambiguous time from September 2013 All Wikipedia articles needing clarification Wikipedia articles needing clarification from September 2013 All articles with unsourced statements Articles with unsourced statements from September 2013 Articles with unsourced statements from April 2017 Talk Search Contents About Wikipedia Azərbaycanca বাংলা Беларуская ( тарашкевіца ) ‎ Български Bosanski Català Čeština Dansk Deutsch Eesti Español Euskara فارسی Français ગુજરાતી 한국어 Հայերեն हिन्दी Hrvatski Bahasa Indonesia Íslenska Italiano עברית Basa Jawa ಕನ್ನಡ Kapampangan Кыргызча Latviešu Lietuvių Magyar Македонски മലയാളം मराठी Bahasa Melayu Nederlands नेपाली 日本 語 Norsk Norsk nynorsk Oʻzbekcha / ўзбекча Polski Português Română Русский Саха тыла Scots Slovenčina Soomaaliga Basa Sunda Suomi Svenska Tagalog தமிழ் తెలుగు ไทย Türkçe Українська اردو Tiếng Việt 粵語 中文 Edit links This page was last edited on 14 September 2017, at 15 : 46. 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Question: what is the minimum speed of 3g network
Answer: 2 Mbit/s