How are we being charged for Roaming voice services? Admin June 26, 2019 14:37 Updated Follow Calls are charged at per min block. Please refer to link www.gridmobile.com.sg/tnc/RoamingVoiceandSMS.pdf Related articles How do I know if I am nearing my cap for my TravelRoam pack? What are TravelRoam packs? Does Grid Mobile support Roaming services? What does the "Local" incoming and outgoing charges in the Roaming Rates means? Does that mean only numbers from the Roaming Countries or numbers from Singapore? How to turn on roaming data? Comments 0 comments Please sign in to leave a comment.