Well, many of us prefer to use prepaid over post paid for variety of reasons and we will take a look at the plans offered.
To subscribe on Singtel, Call *363 on your 3G Prepaid Sim Card.
*Note: You must have a 3G prepaid SIM Card not the old 2G sim card!
To subscribe on Starhub, call *122# on your 3G Prepaid Sim Card.
Admins note: article accurate as of 1 September 2012