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? What is my billing cycle? Do I have to purchase Hype Packs to use roaming / IDD services? Is IDD supported on Grid Mobile’s network? Why am I charged for Global SMS unknowingly? Comments 0 comments Please sign in to leave a comment.