From July 1, StarHub mobile pre-paid customers will be able to switch to a post-paid plan while retaining their existing number.

SingTel and M1 pre-paid customers can also move over to a StarHub post-paid plan without switching numbers.

Customers who are interested in this plan may register their interest at their website www.starhub.com/prepaidporting. Those who do so will have their handsets delivered to them for free when they purchase a new one.

As an added benefit, the telco is also offering its existing mobile pre-paid customers who upgrade to a post-paid plan vouchers between $20 to $100, which can be used when purchasing a new handset. The value of the voucher is based on the number of years they have been a pre-paid customer with StarHub.