Whether you use a mobile phone, fixed-line phone or a fax machine, you can register for the 1638 IDD service and enjoy economical, convenient and high quality IDD calls from SmarTone.


Enjoy great offers and savings with our competitive 1638 IDD rates.


You may register up to three call-from numbers. In addition, you can use a 1638 IDD Service Number to make IDD calls from any phone.

Easy Dialing

Making IDD calls through 1638 IDD is easy. Simply use a 1638 IDD registered phone and follow the steps below:

(Mobile Phone)


(Fixed line/ Fax)


To prevent unauthorised use, 1638 IDD includes a PIN security feature. With PIN security activated, you have to key in the PIN before making each international call.

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