The group's organic service revenue, however, rose 1.7 percent, while the telco's adjusted EBITDA came in 13 percent higher at €7.4 billion.
Analysts said Vodafone was benefitting from a combination of investment in its mobile and fixed line networks and cost cutting.
He said: "Revenue grew organically in the majority of our markets driven by mobile data and our continued success as Europe's fastest growing broadband provider".
It has recently announced a 2 billion euro investment in fibre connections in Germany and a strategic partnership with CityFibre in Britain to improve its fixed-line position.
This was due to deconsolidation of its Dutch arm, now merged with Liberty Global's cable company Ziggo (now Vodafone Ziggo), and foreign exchange movements.
In London, Vodafone shares were trading at 228, up 5.56 percent.
Vittorio Colao, CEO of Vodafone Group, gestures during the session "The Future of the Digital Economy" in the Swiss mountain resort of Davos January 22, 2015. The stock of Vodafone Group plc (LON:VOD) earned "Buy" rating by UBS on Tuesday, October 27.
"The improvement to the outlook primarily reflects stronger than expected underlying European revenue growth and a later than anticipated commercial launch by the new entrant in Italy", Vodafone added on Tuesday. The phone network said that its organic service revenue in the first half of the year grew 1.7%, and also raised the interim dividend by 2.1% to 4.84 euro cents.
The firm was up 4% in morning trading on the London Stock Exchange, after it recorded a 1.2 billion euro (£1.1 billion) profit for the six months ending in September, up from a 5 billion euro (£4.5 billion) loss over the period previous year.
In the announcement for the six months ending September 30, adjusted earnings before interest, tax, depreciation and amortisation (EBITDA) will grow 10 per cent between €14.74bn (£13.1bn) and €14.95bn (£13.3bn), and free cashflow to be more than €5bn (£4.4).
It said free cash flow would also beat its previous expectation, coming in above €5 billion rather than around €5 billion.
Vodafone said on Monday it would sell its mobile phone masts in India, owned separately from its Indus Towers joint venture, to American Tower Corp.
The company said competition remains intense in India, but there are however signs of positive developments in the Indian market, with consolidation of smaller operators and recent price increases from the new entrant.
Colao said he was continuing to explore options for its 42 percent stake in Indus Towers.
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