The rise represents a £1 billion increase in group data revenue and helped Vodafone increase total revenue by nine per cent to £17 billion.
Vodafone chief executive Arun Sarin said: “"Mobile data is a permanent phenomenon. It’s a real ongoing trend."
The group also revealed that sales in emerging markets had increased by 40 per cent following the purchases of Hutchison Essar in India and Telsim in Turkey. Egypt recorded the highest rise with 33.1 per cent, Romania increased sales by 25 per cent and South Africa’s figures rose 19.6 per cent.
Vodafone has now readjusted its full-year operating profit forecast to £9.5 billion and the group will pay an interim dividend of 2.49p per share, which represents a six per cent increase.
Sarin added: “In Europe, we have performed well in competitive markets by driving strong growth in voice usage and data revenue, whilst improving cost efficiency.
“The increased interim dividend reflects the Board’s confidence in how the business is progressing.”
After the results were published, shares in Vodafone had risen by 5.9 pence to 187.9 pence at 10:15am this morning.