Hi all,
I am using a Vodafone postpaid sim card from past 2 years and I think its always better to use a prepaid card as u get the freedom of recharging it as per your convenience. If you have money u can recharge it with a big amount and in a month if you are short of money u can recharge it with a minimum amount just to keep it active and receive incoming calls and messages.
On the other hand postpaid sim cards are a pain. One has to pay the monthly rental every month and if you are late by a day there is a late fee charged.
In prepaid sim cards you can keep a track of your usage however in postpaid sim card you get to see the bill at the end of the month.
And last but not the least there are always hidden charges.
So my honest advice would be to use a prepaid sim card and manage your usage as per your budget.