Updating the market, Vodafone was meanwhile silent surrounding recent speculation that it may offload its sizeable stake in Verizon Wireless, the US mobile operator.
Profit after tax nosedived to �673 million (USD 1.03 billion) in the group's financial year to the end of March from �7.0 billion in 2011-2012, Vodafone said in a results statement.
"We have faced headwinds from a combination of continued tough economic conditions, particularly in Southern Europe, and an adverse European regulatory environment," Vodafone chief executive Vittorio Colao said in the statement.
Vodafone's businesses in Italy and Spain have been hit hard by the impact of the ongoing eurozone sovereign debt crisis.
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The company said that it took a second-half hit of �1.8 billion, taking its total impairment charge to �7.7 billion for Italy and Spain.
Despite the plunge in profits, Vodafone's full-year shareholder dividend stood at 10.19 pence a share, up seven percent from the previous year.
The company took a dividend of its own totalling USD 3.2 billion from Verizon Wireless, in which Vodafone has a 45-per cent stake.
In a conference call, Colao told reporters that Vodafone had "nothing new to announce" about its stake in Verizon, despite ongoing media speculation, noting simply that it was "fantastic asset".
"As Verizon has said many times, it would be a willing purchaser of the 45 per cent stake that Vodafone holds in Verizon Wireless," the US company said at the time.
"It does not, however, currently have any intention to merge with or make an offer for Vodafone, whether alone or in conjunction with others," it added in a statement at the start of April.
Turning to the outlook, Vodafone today forecast that adjusted operating profit would stand at between �12.0 billion-�12.8 billion in the current 2013-2014 financial year.