simpleSIM does not provide a plan that offers truly unlimited high‑speed data for Taiwan. The plans that carry the word “Unlimited” give 3GB per day and, once that amount is reached, the speed is reduced to 1000kbps.
Travelers who need more data can choose from simpleSIM’s fixed data plans, such as the 50GB plan valid 90 days or the 20GB plan valid 30 days, which may be more cost‑effective unless very heavy data usage is required.