Comments By: PTI | New Delhi | Published:January 21, 2016 9:14 pm Vodafone 4G SIM cards will be given to Vodafone customers for free with an exchange process. Vodafone has introduced 4G SIM cards in Delhi NCR as it gears up to roll out the high speed mobile internet services in the region soon. “We want to make the transition to 4G smooth and seamless...