Question: how to change vodafone postpaid to bsnl prepaid?
Answer: You can visit nearest BSNL office and ask for porting.
You need to provide a MNP(Mobile Number Portability) Code.
Send a msg typing PORT to.
You will receive a code from.
You need to provide your address proof, photos and your thumb impression.
You need to make payment of 50 Rs.
You will be provided with a new BSNL sim.