In order to effectively do business in these countries, being able to make phone calls and have a predictable phone number while in country is incredibly useful

In order to effectively do business in these countries, being able to make phone calls and have a predictable phone number while in country is incredibly useful, this is what I’m referring to. I guess the result is a collection of sorts, but these things get used regularly, and the ability to swap and go on my own schedule is what I’d like to see from eSIMs before I lose the ability otherwise.