The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP, UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.
Telecommunication in Serbia is an important economic sector, accounting for 4.7% of country's GDP in 2015.
T-Mobile is the brand name used by some of the mobile communications subsidiaries of the German telecommunications company Deutsche Telekom AG in the Czech Republic, Poland and the United States.
Celcom Axiata Berhad is the oldest mobile telecommunications provider in Malaysia. Celcom is a member of the Axiata group of companies. Celcom was merged with Digi to form CelcomDigi on 1 December 2022.
3G is the third generation of wireless mobile telecommunications technology. It is the upgrade over 2G, 2.5G, GPRS and 2.75G Enhanced Data Rates for GSM Evolution networks, offering faster data transfer, and better voice quality. This network was superseded by 4G, and later on by 5G. This network 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.
Orange Slovensko, a.s. is a Slovak mobile network operator, also offering fibre connections, since 15 January 1997, when it became the first mobile operator in Slovakia to operate the GSM digital mobile network at the 900 MHz frequency. On 15 November 1999, the company launched the commercial operation of the mobile network in the 1800 MHz frequency band. It is also the first company to cover more than 66% of the country with 3G HSDPA high-speed internet with the maximum speed of 42 Mbit/s, launched the HSPA+ upgrade to the maximum of 21.2-42.2 Mbit/s in 2011. The operator plans to commercially operate LTE network by the end of 2012.
Tele2 AB is a provider of mobile and fixed connectivity, telephony, data network services, TV, streaming and global Internet of Things services, amongst others, to consumers and enterprises. It is headquartered in Kista Science City, Stockholm, Sweden. It is a major mobile network operator in Sweden, Estonia, Latvia and Lithuania. The company initially founded Tele2 Russia, but later sold all its operations, only leasing the use of its brand name.
Regulation of the telephone numbers in Serbia is under the responsibility of the Regulatory Agency of Electronic Communication and Mail Services (RATEL), independent regulatory authority. The country calling code of Serbia is +381. The country has an open telephone numbering plan, with most numbers consisting of a 2- or 3-digit calling code and a 6-7 digits of customer number.
Yettel Bulgaria is the largest mobile network and the third largest fixed telecommunications company in Bulgaria. The company was founded under the name "Cosmo Bulgaria Mobile" in 2001 by OTE and operated under the brand name "Globul" until 2014. In 2013 it was bought by Telenor and changed its name. In August 2018, the company was acquired by PPF, a Czech private investment fund. The company continued to use the Telenor brand until 1 March 2022, when it was renamed to Yettel Bulgaria. In February 2024, the company was aquired by e& (Etisalat), and the merger was approved by Bulgaria's competition watchdog. However the branding of Yettel has not yet been changed.
Mobitel was a Slovenian GSM/UMTS/LTE mobile operator. The company merged with Telekom Slovenije in 2013.
A1 Telekom Austria (A1, A eins) is the leading fixed and mobile network operator in Austria, with 5.4 million mobile and 2.3 million fixed-line customers. A1 Telekom Austria traces its origins to Austria's first GSM mobile phone network which began testing in 1992 and commercial operations in 1994, under the name Mobilkom Austria, then part of the Austrian state-owned PTT agency Post- und Telegraphenverwaltung (PTV, ÖPT) until it was split off into its own company in 1996. After Mobilkom's merger with A1 Telekom Austria Group in July 2010 it operates under the new name of A1 Telekom Austria.
Telekom Srbija a.d. Beograd is a Serbian state-owned telecommunications operator. It was founded in May 1997 as a joint-stock company, by spinning off the telecommunications business from PTT Srbija. In April 2015, Telekom Srbija started providing all services in Serbia under the mts brand.
Sri Lanka Telecom PLC, doing business as SLT-MOBITEL, is the national telecommunications services provider in Sri Lanka and one of the country's largest companies with an annual turnover in excess of Rs 40 billion. The company provides domestic and corporate services which include fixed and wireless telephony, Internet access and IT services to domestic, public and business sector customers. As of 2018 SLT-MOBITEL was Sri Lanka's second largest mobile network operator with over 7.9 million subscribers.
High Speed Packet Access (HSPA) is an amalgamation of two mobile protocols—High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA)—that extends and improves the performance of existing 3G mobile telecommunication networks using the WCDMA protocols. A further-improved 3GPP standard called Evolved High Speed Packet Access was released late in 2008, with subsequent worldwide adoption beginning in 2010. The newer standard allows bit rates to reach as high as 337 Mbit/s in the downlink and 34 Mbit/s in the uplink; however, these speeds are rarely achieved in practice.
A1 Srbija d.o.o. is a Serbian mobile network operator owned by A1 Telekom Austria Group. As of 2020, it is the third largest mobile telephony operator with market share of 25.67%.
bmobile is a Mobile Phone, Home Security provider, and fixed wireless provider of Trinidad and Tobago, operating as a division of TSTT.
Vodafone Hungary is the third largest mobile operator in Hungary. It started operations in 1999 after securing the third GSM 900/1800 MHz licence of the country and it was the first provider operating in the DCS-1800 band in Hungary. Vodafone is the third largest mobile network operator of the country again. The operator had a share of ~27% of the market in Q2 2020. They controlled approx. 27% of the market in December 2019. Market share The full report about the number of subscribers is available on the company website.
MagtiCom, Ltd. is a Georgian telecoms company founded on February 12, 1996 by Dr. George (Gia) Jokhtaberidze. On September 22, 1997, the Company made the first commercial call from its mobile network. The services offered by MagtiCom involve as follows: mobile telephony; mobile internet ; Cable fixed telephony (VoIP); internet television (IPTV) and fiber-optic internet. Since 2016 MagtiCom started to provide IPTV, VoIP and fiber-optic internet.
3G mobile telephony was relatively slow to be adopted globally. 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 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 delayed acquisition of these updated capabilities.
Mobi Banka, formerly known as Telenor Banka, is a commercial bank based in Belgrade, Serbia. It was founded in 2014 upon the acquisition of KBC Banka in Serbia, by Telenor Serbia, one of the largest telecommunications operators in the country.
€394.49 million (2017) [1] 
€272.30 million (2017) [2] 
