ByteSIM does not offer a truly unlimited data eSIM for New Zealand. All of its plans that carry “Unlimited” in the name actually provide 1 GB of high‑speed data per day; after that limit is reached the speed drops to 10240 kbps and the name “Unlimited” is only a marketing label.
The provider does sell fixed‑data plans that can be more cost‑effective for heavy‑usage travelers. For example, ByteSIM offers a 50 GB plan valid for 3 days and a 50 GB plan valid for 5 days, both allowing tethering and no speed throttling once the data cap is reached. These fixed‑data options are suitable for users who need a larger data allowance without the constraints of a daily limit.