ZenSim does not provide a true unlimited high‑speed data eSIM for Jersey. All plans listed under the “Unlimited STANDARD” name give 3GB per day and apply a reduced speed of 1000 kbps once that daily limit is reached, so the data is capped per day before throttling occurs.
Travelers looking for a large, predictable data allowance can choose from ZenSim’s fixed‑data plans, such as the Jersey Unlimited STANDARD 30 days plan (3GB/day for 30 days) or the Europe+ Unlimited STANDARD 30 days plan (same daily amount, covering Jersey and 38 additional European countries). A second sizeable option is the Europe+ 40GB plan for 30 days, which offers a 40GB bundle with no daily quota and no speed reduction.