Airtel shuts down 3G network in Kolkata, refarms 900 MHz spectrum

Indian operator Bharti Airtel reports it has shut down its 3G network in Kolkata. Airtel mobile broadband services in city will now be available on the operator's 4G network. Airtel has refarmed the 900 MHz spectrum used for 3G to strengthen its 4G network. Airtel also said it will continue to provide 2G services in Kolkata to serve customers using feature phones.