ZenSim does not provide a truly unlimited data eSIM for Japan. The plans named Japan Unlimited give a daily cap of 3GB; after reaching that limit the speed would drop, so the plan is not unlimited in the sense of unlimited highโspeed data.
Instead, ZenSim offers fixedโdata options that can be more cost effective for most travelers. Examples include the 20GB plan valid for 30 days, priced at $35.00 USD, and the 10GB plan valid for 30 days, priced at $21.00 USD. These plans provide a large data allowance and may suit users who do not need unlimited data but still want substantial connectivity.