"We believe the largest three operators -- Bharti Airtel, Vodafone and Idea Cellular -- have manageable leverage and improving market shares, which should enable them to withstand the impact of the auctions outgo," Standard & Poor's credit analyst Abhishek Dangra said in a note today.
The government kicked off radio spectrum auctions yesterday which got off to a good start from a revenue point of view, with bid amounts already crossing Rs 60,000 crore on the very first day.
Last week market leader Bharti had said that tariff would have to go up after auctions, though the report said that voice tariff is unlikely to go down over the next 12 months.
However, Dangra added that "Competition is likely to intensify in the data segment, with government-owned BSNL announcing sharp price cuts and Reliance Jio likely to enter the market".
On likely consolidation in the industry, the report said the weaker market positions of smaller companies may limit their ability to match the tariff hikes of their larger peers, for fear of losing market share.