Best International Roaming packs


Hi All,

I do quite a bit of traveling and generally get a local SIM for 4G data, but recently got a single-sim phone, so that's not an option anymore.

Vodafone's packs seem terrible for data, they are mostly for incoming/going calls that I don't need.
Airtel's packs seem slightly better, and they have very good packs for a few countries like Thailand etc with 2Gb data for 10 days for 1100 only.
I cannot find any mention of International roaming on Jio's website

Does anyone here frequently use international roaming packs? Does anyone know what the international roaming charges for JIO are?