1 / 7Bharat Sanchar Nigam Limited (BSNL) is all set to offer the most affordable 30-day prepaid plan to users in India.2 / 7. There are no SMS and data benefits included with this plan. BSNL on its website said this plan charges “20 paise/min on-net calls + 20 paise/min off-net calls”. If you want to keep your BSNL SIM active, this voice voucher can be a good bet.3 / 7If you want a solid and affordable prepaid plan from BSNL which comes with 30 days of validity, even the STV_147 is not a bad option. Particularly because it ships with both data and voice calling benefit for the users4 / 7With this plan, users get unlimited voice calling in addition to 10GB of data and the BSNL Tunes facility. There are no SMS benefits included with this plan.5 / 7If you can pay a little more, then you can go for the STV_247 from Bharat Sanchar Nigam Limited. This plan also bundles SMS benefits for the users. Users get 50GB of data along with unlimited voice calling and 100 SMS/day along with BSNL Tunes and Eros Now entertainment services6 / 7This is yet another exciting special tariff voucher (STV) that you can get from Bharat Sanchar Nigam Limited. With this plan, users get 3GB of daily data, unlimited voice calling, and 100 SMS/day The internet speed drops to 80 Kbps once the fair usage policy (FUP) data is exhausted.7 / 7These are some of the 30-day vouchers that you can take from Bharat Sanchar Nigam Limited. At the same time, even telecom operators such as Vodafone Idea (Vi), Bharti Airtel, and Reliance Jio have come out with prepaid plans that offer 30 and 31 days of validity.