Starhub porting over of land line is not as seamless as mention on their website. Timing is quite important to ensure your downtime is as minimum as possible.
It takes 7 working days to unlock your land line and enable the incoming Telco to process the application. The incoming Telco take 5 working days to complete the transfer. Therefore you are looking at a few days if downtime if it is time correctly. The whole process will take 12 business working days to complete.
Sending in the transfer app by email is not seamless. You need to ensure the agent receive your form else it is not counted. Sitting in the email is not good enough as their sales executive share the same email.
Therefore it is better to submit through the customer service centre to ensure acceptance of instruction to act.
Please leave a comment if your porting over of land line is delay in anywhere.