Hi - I’ve traveled to various countries including India, Hong Kong, Mexico. In all of these areas, I did have international roaming credit on my account but I wasn’t able to make any calls/texts/data. I noticed that the only network visible to my phone was “Mint”, and no local networks were visible.
Is there some setting needed to enable international roaming? I am using an iPhone X and have roamed internationally with no issues using Google Fi and other carriers without requiring any changes.