I asked this to CC sometime ago , they said that topup is for calling to premium numbers(within India) and to call international numbers, Main balance can also be used for sending international sms
nine months go im using Rs. 253 2GB per month (Vodafone)
1st Time Rs. 353 1GB Per Day 84 Days(Vodafone)
2nd Time Rs. 399 1GB Per Day 84 Days(Vodafone)
Now Using Rs. 509 1GB Per Day 91 Days(Vodafone)
Bought a Jio Phone for my aunt today. I'm bowled over by how easy it became for the elderly people to get a feature phone. Within half an hour, we are all set and she started calling! Thank you so much Mr.Ambani!!