The line on the porting-out telco will become inactive shortly after 23:00 at night. The Heya line will become active on the next day around 02:00. Note that the Heya SIM will be unusable even with a temporary number until the porting has completed successfully.For those who ported in.
What time at night that the Heya sim becomes active (Can be used)?
That's just my guess as I'm not awake at 02:00. All I remember is that when I woke up at 08:00 my Heya SIM is active.
Note that SMS OTP will take one or two days to be properly "set up" on your Heya SIM after the porting in is completed. Have some patience.