For those who didn't notice. Vodafone's Rs 100 "Talktime Recharge" now gives Rs 81.75 talktime (unrestricted validity) and
28 days Service Validity. Check the details of Rs 100 Recharge by clicking on "Know More" button at Vodafone's official website:
Source:
Online Recharge | Easy Mobile Recharge | Quick Prepaid Recharge Online | Vodafone India
Effectively, this might be the most economical way for a month-to-month secondary SIM.
Rs 100 recharge, gives Rs 81.75 main balance talktime with unrestricted validity. So effectively, in Rs 18.25 you have got a full 28 days validity. However, what to do with the Main Balance remains a big question. Let me know if anyone has recharged with this plan, and the benefits that are obtained with this recharge.
Cheers.