eSIMCard does not provide a truly unlimited data eSIM for Taiwan. Every plan that lists “Unlimited” in its name actually contains a fixed data cap—ranging from 1 GB to 2 GB per day—and after that cap is reached the speed is reduced (for example, to 512 kbps or 2000 kbps). The largest high‑speed allowance available from eSIMCard in Taiwan is 100 GB for 30 days, priced at $97.83 USD.
If a traveler prefers a fixed‑data option, eSIMCard offers several high‑capacity plans. A 100 GB plan is available for 30 days, and daily data plans are available at $2.72–$58.94 USD for 1 GB per day over periods from 1 day to 30 days. These fixed‑data plans can be more economical for most users, while the “Unlimited”‑named plans are suitable only if the user is willing to accept the speed reduction after the allotted data is used.