Vodafone is a mobile network operator with its headquarters in Newbury, Berkshire, England, UK. It is the largest mobile telecommunications network company in the world by turnover and has a market value of about £75 billion (August 2008). The name Vodafone comes from Voice data fone, chosen by the... 

Celcom is the first mobile telecommunications company in Malaysia and also a member of the TM group of companies. Celcom successfully introduced mobile telephony in Malaysia through its ART-900 service, using first generation NMT-900 technology. Celcom upgraded to the GSM900 service as the cellular phone...