"This is an important agreement for the future of connectivity in one of the world's largest telecoms markets and solidifies our position in India," outgoing CEO Rajeev Suri said.
With a population of 1.3 billion, India is the world's second largest telecoms market, which Nokia predicts will grow to 920 million unique mobile customers within five years as online demand soars.
The deal comes after a punishing six months for the Finnish networks giant after it downgraded its 2020 earnings forecast last October as attempts to break into the 5G equipment market faltered in the face of fierce competition from Huawei and Ericsson.
Nokia went on to beat expectations in a "challenging" 2019 and in February posted its first full-year net profit since 2015 of 7 million euros, before announcing a change of CEO in March.
Earlier this month Nokia's share price surged 12.5% on the basis of media reports that the firm was raising finance against a hostile takeover bid, a claim the equipment maker refused to comment on.