Where can I refer to the rates for IDD services? Admin September 07, 2019 12:11 Updated Follow You may do so via https://gridmobile.com.sg/tnc/IDDnV019Rates.pdf Related articles How do I make an IDD 019 call? How are IDD calls charged? Are there any registration fees or monthly subscription charge for IDD 001 and IDD 019? How do I make an IDD 001 call? What will happen to my free Buddy SIM after 12 months? Comments 0 comments Please sign in to leave a comment.