As I already discus about the 4G technology[Read here]. What it is and How fast it is.. So now good news is there...
At the beginning of this year, Airtel increased the service in , Kolkata and Bangalore cities to its 4G LTE. Airtel 4G LTE Multi - mode dongle is priced at Rs 7,999, while the indoor CPE WiFi with other models that are priced at Rs 7750. While Airtel has given limited time offer to buy one of these devices only at Rs 4999.
Airtel Long Term Evolution 4G LTE Networks Time - Division Duple sing (LTE TDD) will be operate on 2300MHZ of the radio frequency spectrum, and smart phone or tablet to t and is not directly available.