Vodafone Idea deploys 900 MHz spectrum band on 2300 4G sites to improve network in Delhi NCR region. TIMESOFINDIA.COM | Apr 16, 2020, 21:23 IST. NEW DELHI: In order to boost network capacity in the Delhi NCR region, Vodafone Idea said that it has deployed 900 MHz spectrum band on 2300 4G sites.16 Nis 2020