BSNL extends validity of Rs 699 prepaid plan, what Airtel and Vi offer at the same price BSNL has extended the validity of prepaid plans priced at Rs 699 and Rs 2399 by 20 days and 72 days respectively. These plans can be used by existing as well as new prepaid mobile customers. Yasmin Ahmed | April 6, 2021 | Updated 11:07 IST (Picture: Reuters) BSNL has extended the validity of Rs 699 and Rs 2399 prepaid plans. The prepaid plans saw an extension by 20 days and 72 days till May 30, 2021. Airtel and Vi also offer prepaid plans at this price point. Government-owned telco Bharat Sanchar Nigam Limited (BSNL) has made revisions to several prepaid plans. The plan was introduced in May last year and will get extended validity of 20 days from April till May 30, 2021.