The best free 4G data pack currently available in Chennai / Madras is the Plan 498 (Prime Members Only) costing you just 498.0 and includes 182.0 GB. data benfits from Jio for 3 months.
The best free 4G data pack currently available in Chennai / Madras is the 3G/4G Mobile Internet Pack 18 costing you just 18.0 at the rate of Unlimited. from Vodafone for Less than a month.