Where can I refer to the rates for IDD services? Admin August 16, 2019 03:50 Updated Follow You may do so via www.gridmobile.com.sg/tnc/IDDnV019Rates.pdf Related articles How do I make an IDD 019 call? Are there any registration fees or monthly subscription charge for IDD 001 and IDD 019? How are IDD calls charged? What will happen to my free Buddy SIM after 12 months? How do I make an IDD 001 call? Comments 0 comments Please sign in to leave a comment.