eSIMCard’s plans that carry the title “Unlimited” actually provide a fixed amount of high‑speed data each day and then throttle speed once that limit is reached. For Tanzania, the smallest is a 1 GB plan for 1 day that drops to 500 kbps after the data cap and a 2 GB plan for 1 day that drops to 2000 kbps. Because of this throttling, eSIMCard does not offer truly unlimited high‑speed data for Tanzania.
If a traveler needs larger, unthrottled data, eSIMCard offers fixed‑data plans such as 20 GB for 30 days, 25 GB for 30 days, 50 GB for 90 days, or a 100 GB plan for 180 days that covers Tanzania and worldwide coverage. These plans provide high‑speed data without throttling, but they are not unlimited.