"The auctions may be a bit muted this time as the operators may look at other options, including spectrum- sharing deals, in a more focused manner," the domestic rating agency said in a note.
Seven telcos have deposited Rs 14,653 crore in earnest money for the auctions likely next month.
A company has to deposit up to 12 per cent of the reserve price for spectrum they are likely to bid for, which translates into bids of around Rs 1.40 trillion coming up, which is lower than the reserve price of Rs 5.60 trillion for the total quantum of spectrum put up for sale by government.
In the note, Care said the entry of Reliance Jio, with its cheaper offerings, only complicates matters as the incumbents were likely to beef up their spectrum at the auctions to address issues like call drops.
More From This Section
The entry of Jio, with the promise of lifetime free calling, will lead to challenging times for the incumbents, who get 70 per cent of their revenue from the voice and SMS business.
"The much-discussed consolidation in the sector, which was already underway, is expected to gain further momentum with the smaller players likely to be looking for exit options at their desired valuations," it added.
Jio also faces its own set of challenges, it said, pointing out to state-run BSNL's already operational 2,50,000 km of optic fibre network as a potential difficulty for the Mukesh Ambani-led company which intends to give wi-fi spots.
It will also have to ensure the user experience to gain more traction. The unlimited data on Jio services will increase the average data consumption per user, the rating outfit maintained.