Can i ask is it let say i not in the hurry so i opt for sim card delivery. And is it i activate the sim when delivered then they will start to do porting?
Yes, if you are not in hurry, but take note that you will need to activate your SIM when you receive the SIM card, only than the porting instructions will be fired up. Noticed there are lots of people here with porting issues after receiving SIM card, as this activating after receiving has some issues with some telcos.
Best is to sign up at the shop / service centre or get esim. Once you signed up, the activation of the SIM is immediate.
Just like last time when there is only Singtel Starhub and M1, we go down their shop to get SIM card. Best to go collect yourself since there is so many SIM pick up island wide. Or get eSIM
SIM card might get lost in transit too.