Important centers, including Kochi, Trivandrum and Kozhikode, would be a part of the first wave of 4G roll-out, which would be launched across the circle in a phased manner, Vodafone said in a statement.
Testing of 4G services has commenced successfully, it added.
"Vodafone India has partnered with leading global technology infrastructure service providers for the network roll-out.
"With some of the latest technological developments on the anvil, Vodafone is building robust and resilient network architecture with a strong backup to support the volumes and need for speed from customers," the statement said.