O2 results reveal highest number of customer additions during Q1 for four years

Text messaging has celebrated its 20th birthday, but a new wave of data-centric services for smartphones is threatening its existence 

Grey trading may be a controversial subject in the mainstream mobile industry, but it is helping wholesale B2B marketplace gsmExchange and its 60,000 members to flourish. Jasper Jackson talks to the company to find out how it started, who its members are and how it operates