BambooSIM offers a range of unlimited data eSIM plans for Japan, with validity periods from 3 days up to 31 days. Prices start at $9.95 USD for a 3‑day plan and rise to $68.29 USD for a 31‑day plan, all delivered over 5G networks and allowing tethering.
Even though the data cap is listed as unlimited, BambooSIM applies a Fair Usage Policy. After a certain amount of high‑volume use, speeds may be reduced to a lower tier. If you anticipate heavy data consumption or want assurance about how long normal speed will last, contact BambooSIM directly to confirm the typical data volume that remains at full speed under the FUP.