IDD Call:
You are currently in Singapore and using a Singapore-registered phone number. You are calling a phone number registered overseas, eg. Malaysian number.
Note: If your mobile plan comes bundled with free IDD 019 mins, IDD charges may still apply if you are using IDD 001, exceed the free bundled IDD 019 mins or making a call to destinations not included in the free bundled IDD 019 talktime pack. Click here for details on IDD charges.
Roaming Call:
You are currently overseas and using a Singapore-registered phone number. You are calling someone in Singapore or in another country.
Click here for details on Roaming call charges.