ChillaxSIM does not offer a truly unlimited high‑speed data eSIM for China. All plans that carry the word “unlimited” in their name provide 1GB of high‑speed data per day; once that limit is reached the connection is throttled to 5120kbps. Because the data allowance is capped, the plans are not unlimited in the sense of unrestricted high‑speed usage.
If a higher, fixed data allocation is preferable, ChillaxSIM offers alternative plans such as the 120GB plan valid for 30 days, which includes 120GB of high‑speed data for China (with speed reduced to 128kbps after the allotment is exhausted), and the 50GB plan, also valid for 30 days, which delivers 50GB of high‑speed data for China. These fixed‑data plans may be more cost effective for travelers who need substantial data without the throttling that applies to the “unlimited” labeled plans.