But as others have mentioned,
the new StarHub Prepaid plan is probably a Postpaid plan in disguise.
#4 is already a violation of the three Prepaid Cards limit by IMDA. #9 is another major difference.
Major difference is the long 120 days grace period, making it still a viable option for number parking.
https://www.starhub.com/personal/mobile/starhub-prepaid.html
4. How many lines am I allowed to sign up for?
NRIC and FIN holders are allowed to sign up to 10 mobile services.
5. Can I port in my mobile number from another operator to StarHub Prepaid?
Yes, you can. Simply visit any StarHub Authorised Reseller with your original document ID to sign up.
6. I am already using StarHub Prepaid service. Can I sign up for the new StarHub Prepaid Plan and continue using the same number?
Yes, you can. Simply visit any StarHub Authorised Reseller with your original document ID to switch today.
9. How long is my StarHub Prepaid plan valid?
Your StarHub Prepaid Plan is valid for 1 month from the date of purchase.
11. What will happen if I do not renew my StarHub Prepaid Plan?
At your plan expiry, you'll enter a 120-day grace period. During this time, you can still receive calls and SMS. To resume full service, simply top up.
If no top-up is made after 120 days, your line will be terminated and any remaining credits will be forfeited.