"Our conclusion is that
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However, the newcomer did not fare as well when it came to speeds - the survey concluded that Airtel offered the best 4G speeds, while Jio was "probably bogged down by load".
"We also studied the network speed results across all these locations. Airtel 4G offers the best download speeds in general (12Mbps plus). Jio, Vodafone, and Idea are close to each other (7-8Mbps). We suspect Jio's speeds are impacted by the high load on the network in the free offer period," Credit Suisse said.
Jio carries 90 per cent plus of all data traffic in the country currently while its network capacity share is closer to 35 percent, it added.
The competitive pressure is expected to sustain, the report said adding that significant pressure on fundamentals will continue in coming quarters from Jio.
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"We have already started seeing the impact of Jio on the incumbents' numbers (
The study covers over 30 Indian cities that represent a "significant chunk of current data demand and revenues", it said.