Group revenue slipped 1.5 percent to 9.587 billion pounds (USD 15.621 billion) in the group's third quarter, or three months to the end of 2013, compared with the equivalent period a year earlier, Vodafone said in a statement.

"Our emerging market businesses are growing strongly, supported by consistent execution and accelerating demand for data," chief executive Vittorio Colao said.

"In Europe, conditions are still difficult, and we continue to mitigate these challenges through on-going improvements to our operating model and cost efficiency,” Colao said.

He added that Vodafone was optimistic over the group's revenue performance improving ‘as regulatory headwinds ease and customer appetite for video and content services increases’.

Vodafone, which is the world's second-biggest mobile operator by subscribers after China Mobile, agreed last year to sell its US joint-venture stake to partner Verizon for USD 130 billion in one of the biggest transactions in global corporate history.

Last month, US telecoms giant AT&T denied it was planning to launch an offer for Vodafone following fresh rumours of a mega bid.

British media reports have suggested that AT&T is looking at offering about 60 billion pounds (USD 97.746 billion) for Vodafone following similar market speculation last year.

(Agencies)

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