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.
Roaming is a wireless telecommunication term typically used with mobile devices, such as mobile phones. It refers to a mobile phone being used outside the range of its native network and connecting to another available cell network.
Meteor Mobile Communications Limited was a GSM and UMTS mobile telecommunications company in Ireland. They operated a GSM/GPRS/EDGE/UMTS(HSPA+) and LTE cellular communications network under licence from the Commission for Communications Regulation (ComReg), and were the third entrant in the market, after Vodafone Ireland and Three Ireland. The company was a wholly owned subsidiary of Irish telecoms network Eir, having been purchased for €420m in 2005. Meteor was the only Irish owned mobile operator in Ireland. Meteor once issued new numbers with the prefix code 085. Since the introduction of full mobile number portability in Ireland, access codes have become less relevant as mobile telephone users may now retain their mobile telephone numbers when moving between mobile network operators. As a result, Meteor customers could have numbers starting with the codes 083, 085, 086, 087, or 089.
GSM services are a standard collection of applications and features available over the Global System for Mobile Communications (GSM) to mobile phone subscribers all over the world. The GSM standards are defined by the 3GPP collaboration and implemented in hardware and software by equipment manufacturers and mobile phone operators. The common standard makes it possible to use the same phones with different companies' services, or even roam into different countries. GSM is the world's predominant mobile phone standard.
Turkcell İletişim Hizmetleri A.Ş. is the leading mobile phone operator of Turkey, based in Istanbul. The company has 39.3 million subscribers as of September 2021. In 2015, the company's number of subscribers climbed to 68.9 million, in nine countries. The largest shareholder is Turkey Wealth Fund with 26.2% ownership. It is one of the world's biggest companies list published by Fortune. Turkcell has also developed Yaani, a browser for mobile and desktop. Turkcell's general manager is Ali Taha Koç.
Türk Telekomünikasyon A.Ş. is a state-owned Turkish telecommunications company. Türk Telekom was separated from Turkish Post (PTT) in 1995.
lifecell ) is a Ukrainian telecommunications company based in Kyiv. It is the third largest Ukrainian mobile telephone network operator, covering 98.82% of Ukrainian inhabited territory. DVL Telecom is the parent company of Lifecell. Lifecell's dialing prefixes are +38063, +38093 and +38073.
TT Mobil İletişim Hizmetleri A.Ş,, currently operating under the Türk Telekom brand, is the sole GSM 1800 mobile operator of Turkey, was founded in 2004, and has reached a nationwide customer base of 17 million as of September 30, 2015.
Dialog Axiata PLC, is one of Sri Lanka's largest telecommunications service providers, and the country's largest mobile network operator with over 17 million subscribers which amounts to 57% of the Sri Lankan mobile market. Dialog is a subsidiary of Axiata Group Berhad which owns 73.75% controlling stake of the company, while Bharti Airtel owns 10.36%.
A1 Bulgaria is a telecommunications company in Bulgaria owned by A1 Telekom Austria Group.
Mobitel was a Slovenian GSM/UMTS/LTE mobile operator. The company merged with Telekom Slovenije in 2013.
Wind Telecomunicazioni S.p.A., more commonly known as Wind, was an Italian telecommunications company of the VimpelCom Ltd. group, which offered mobile telephony services and, through Infostrada, also fixed-line telephony services, Internet and IPTV.
Vodacom Tanzania Limited is Tanzania's leading cellular network company. As of December 2020, Vodacom Tanzania had over 15.6 million customers and was the largest wireless telecommunications network in Tanzania. Vodacom Tanzania is the second telecom company in Africa, after Vodacom, to switch on its 3G High-Speed Downlink Packet Access (HSDPA) which was available only in Dar Es Salaam in early 2007.
IP exchange or (IPX) is a telecommunications interconnection model for the exchange of IP based traffic between customers of separate mobile and fixed operators as well as other types of service provider, via IP based Network-to-Network Interface. IPX is developed by the GSM Association.
Emtel Ltd. is a telecommunications company based in Ebene City, Mauritius. Launched on 29 May 1989 – Emtel Ltd became the first mobile telephony operator in the Southern Hemisphere. This took place under the aegis of The Currimjee Jeewanjee Group.
Hutchison 3G Enterprises S.A.R.L., commonly known as Hutchison 3G and trading as 3 (Three), is the owner of a brand name that operates several mobile phone networks and broadband Internet providers in Hong Kong, Macau, Austria, Denmark, Indonesia, Ireland, Italy, Sweden, and the United Kingdom.
2degrees is a New Zealand full service telecommunications provider. It's the third-largest wireless carrier in New Zealand, with 1.3 million subscribers as of July 2015. Since launching its mobile network, 2degrees broke up the New Zealand mobile duopoly halving the price of Prepay overnight. 2degrees offers services across mobile, broadband, business and power.
Vodafone Telekomünikasyon Anonim Şirketi or Vodafone Turkey is a Turkish mobile telecommunications company. It was formed when Telsim, which was founded by the Uzan Group, was incorporated into Vodafone on 28 December 2005. On 24 May 2006 Telsim brand name was changed into Vodafone Turkey. Incorporated by the Vodafone, one of the biggest international mobile communication companies of the world in terms of revenues, Vodafone Turkey is the second-biggest mobile communication company of Turkey with 20.6 million users as of 11 November 2014, an increase of 105,000 customers from the fourth quarter of 2011. As the second biggest direct international investment of Turkey, the total investment of Vodafone Turkey, including the acquisitions, since 2006 has exceeded TL 11 billion.
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.
This article covers the telephone services in Turkey.
