I have Android and I see that I can enable International Roaming (Connections >> Mobile Networks >> Data Roaming >> On/Off), and disable Data usage (Connections >> Data Saver >> On/Off).
However I´m not sure if this will be useful for what I need, which is BEING ABLE TO RECEIVE CALLS, BUT AVOIDING DATA USAGE since I will be connected to Wifi and I don't want expensive charging for data usage.
Is this the way to do it?