you may buy a 2G sim card at the cheapest cost only for local use. For my case, U ...
Sorry, I don't really understand as I have no previous experience in using this kind of sim at overseas.
In my case, I need a sim for (1) communication between HK and Taiwan, and (2) dining reservation/souvenirs delivery service at Taiwan. Is that "1 card 2 nos" good enough in my case?