Airtel was the first to shut down its 3G service in Kolkata last year. Airtel had said in a statement that Airtel mobile broadband services in the city will now be available only on 4G. Airtel will now use the 900 MHz band spectrum used for 3G to further strengthen its 4G network for 4G networks. After Kolkata, the company has gradually stopped its 3G service in many cities. Let's know about these cities .. Apart from Kolkata, Airtel's 3G service has also stopped in Maharashtra, Goa, Madhya Pradesh, Chhattisgarh, Kerala, Karnataka, Punjab, Kolkata, Haryana and Gujarat. In the areas where Airtel discontinued its 3G service, the company duly informed all the customers that the company was duly informed to upgrade the handset / SIM to 4G. Apart from this, the company's 3G customers will continue to get voice services which have not yet upgraded their handset / SIM. At the same time, Airtel's 3G service is going to be discontinued across the country by March 2020. Continuing 2G service Airtel has also said that 2G services can continue to meet the connectivity needs of its consumers on feature phones. The company is deploying state-of-the-art L900 technology in the 900 MHz band to complement its 4G services in the 2300 MHz and 1800 MHz bands. With the L900, Airtel smartphone consumers can now enjoy even better 4G availability inside buildings, homes, offices and malls. Also Read: These two Samsung smartphones will be launched in India tomorrow, information leaked IPhone 9 can be launched in India for less than 30 thousand rupees Xiaomi will launch the most expensive smartphone so far, know full detail Specifications leaked before the launch of Samsung Galaxy S20 smartphone