New Delhi: Tests of 5G technology will soon begin in Delhi, Mumbai, Kolkata, Bengaluru, Gujarat, and Hyderabad. The spectrum was provided by the Union Ministry of Telecom to the companies. Telecom companies Reliance Jio, Airtel, Vodafone-Idea, and MTNL are conducting experiments with Ericsson, Nokia, Samsung, and C-Dot. Geo uses locally developed technology. For this, 700 MHz, 3.3–3.6 GHz, and 24.25–28.5 GHz bands have been sanctioned, the Union Ministry said. The trial is for 6 months. This will include 2 months to adjust the equipment and technology.