BSNL STV 411 Plan: 100GB High-Speed Data in 60 Days with Post-Limit Throttling. BSNL, the state-owned telecommunications giant has come up with an interesting prepaid Special Tariff Voucher (STV) i.e. the BSNL STV 411 with a firm focus on data-oriented users who value quantity over voice or SMS service. This plan is priced at 411 […]