MTNL Mumbai brings back promotional offer on STV 196, STV 329, STV 399, PV 1499 and Data STV 1298

State-owned telecommunications service provider Mahanagar Telephone Nigam Limited (MTNL) has reintroduced the promotional offer today on 3G Special Tariff Vouchers (STVs) today after the existing promotional offer expired earlier this week. The promotional offer is applicable on STV 196,…