I haven’t tried it yet, and I haven’t had a reason to look into it. My experience with Fi was that you pay $10 per Gb - it didn’t come out of your normal bank - and per-minute charges. When I was traveling, I used my company phone, or if on vacation, purely data with heavy up front-caching as much as I could at the hotel. I really don’t like surprise bill sizes.

But to be honest, I haven’t tried Mint internationally, so I can’t say.