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T-Mobile UK

T-Mobile UK
Industry Telecommunications
Founded 1993 (as Mercury One2One)
Defunct 2010–2015 (phased into EE)
Headquarters Hatfield, England, United Kingdom
Area served
United Kingdom
Products Mobile telecommunications products and services
Parent EE Limited
Website www.t-mobile.co.uk

T-Mobile UK was a mobile network operator in the United Kingdom, owned by Deutsche Telekom since 1999, and originally launched as One2One. In 2009, Deutsche Telekom and Orange SA announced that the T-Mobile network was to be merged with Orange UK in a joint venture, EE Limited to form the UK's largest mobile network. EE withdrew the T-Mobile brand in February 2015.

The network was originally launched as Mercury One2One, a GSM mobile network operated by the now-defunct Mercury Communications. It was the world's first GSM 1800 network when it was launched in September 1993. It was later rebranded as simply One2One, when it was operated for a short time as a joint venture between Cable & Wireless plc and American cable provider Mediaone Group, which had a number of investments in Britain dating back to its days as the US West Media Group. The network was purchased by Deutsche Telekom in 1999 and rebranded as T-Mobile in summer 2002.

T-Mobile offered both pay-as-you-go and pay-monthly contract phones. The pay-monthly contracts consisted of set amounts of minutes and 'flexible boosters' which allow the customer to change them month to month depending on their needs. Prior to this T-Mobile had a contract option known as 'Flext' which gave the user an amount of money to use for calls, texts, MMS and mobile internet as necessary. This was withdrawn in early 2010. There is no warning when pay-monthly customers exceed their monthly inclusive limit, leading to unexpectedly large bills. T-Mobile launched their 3G UMTS services in the Autumn of 2003.

On 12 December 2007, it was confirmed that a merger of the high-speed 3G and HSDPA networks operated by T-Mobile UK and 3 was to take place starting January 2008. This resulted in T-Mobile and 3 having the largest HSDPA mobile phone network in the country, with HSDPA access initially restricted to Web'n'Walk Plus customers and above.


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