Update yourself. Jio has deployed LTE Advanced to its network. In theory this tech can achieve 1Gbps using 5 carriers. Commercial solutions currently available support 3 carriers with max speed upto 600Mbps [emoji6]
http://telecom.economictimes.indiatimes.com/news/reliance-jio-begins-carrier-aggregation-trials-across-all-bands/53399543
For real world commercial deployment status you can check it.
EE said it managed to get 360Mbps on an HTC 10 when it tested its network in a real-world setting at Wembley Arena
http://www.ibtimes.co.uk/ee-customers-get-big-mobile-internet-speed-boost-faster-4g-rolls-out-1579957
http://telecom.economictimes.indiatimes.com/news/reliance-jio-begins-carrier-aggregation-trials-across-all-bands/53399543
For real world commercial deployment status you can check it.
EE said it managed to get 360Mbps on an HTC 10 when it tested its network in a real-world setting at Wembley Arena
http://www.ibtimes.co.uk/ee-customers-get-big-mobile-internet-speed-boost-faster-4g-rolls-out-1579957