HYDERABAD: Chief Executive Officer of Bharathi Airtel (Telangana and AP) Venkatesh Vijayraghavan called on IT minister KT Rama Rao here on Friday and presented him with Airtel 4G SIM card. Vijayraghavan said that Airtel was the first telecom operator to launch 4G services in Hyderabad. Customers can upgrade their SIM cards to use 4G services, he added. Upgradation can be done at any Airtel store free of cost and there is also a service to home deliver 4G SIM. Currently, Airtel 4G services are available in Hyderabad and Vizag, an official release said.