nextSIM’s plans that carry the word “Unlimited” are not truly unlimited. They provide a fixed amount of high‑speed data—such as 1GB or 2GB per day—and when that amount is reached the speed drops to a reduced rate, listed as 512kbps or 2000kbps. Therefore, nextSIM does not offer a high‑speed data plan with no cap for travelers in China.
If a user needs more data for a longer stay, nextSIM offers fixed‑data options. For example, the eSIM China 20GB 30Days Economy plan supplies 20GB of high‑speed data for 30 days at $30.56 USD, while the eSIM GLOBAL 30GB 30Days Premium plan delivers 30GB for 30 days for $789.71 USD. These fixed‑cap plans may be more cost‑effective than the “Unlimited” plans for heavy data users.