How do I sign up for a
Singtel CIS plan online?
What type of documents do
I need to submit when I sign up for a Singtel CIS plan
How do I convert/port-in my line to Singtel CIS?
How many CIS lines can I sign up for?
Customer Service: 1688 From
8am to 10pm, Everyday
After Sales Assistance: 6509 3088 From 9am to 6pm, Monday to
Friday (except public holidays)