Gigapanda does not provide a plan with truly unlimited high‑speed data for Japan. The plans labeled “Unlimited” give 3 GB per day at full speed and then throttle to 128 kbps (Okinawa) or 384 kbps (Asia) after the daily cap is reached.
Travelers who need a large amount of data can choose Gigapanda’s fixed data plans, such as the 50 GB plan for 30 days, the 30 GB plan for 30 days, or the 20 GB plan for 30 days. These plans offer a set data allowance that must be used within the validity period and may be more cost‑effective for most users unless extremely heavy data consumption is expected.