Does the Sudo phone number support National and International calling? Meg - Team Sudo May 26, 2018 14:07 Updated Follow Yes! SudoApp supports select destinations for phone calls. Placing and receiving calls outside of these select destinations is not currently supported. Related articles How do I make an International Call from SudoApp? What countries can I call? Will my Sudo phone number ever expire? I'm unable to call a UK phone number How much data is used by a voice call and will this consume some of my cell data plan? Comments 0 comments Article is closed for comments.