ChillaxSIM eSIM Data Plans for Japan

ChillaxSIM does not provide a truly unlimited data eSIM for Japan. The plans marketed as “unlimited” actually allow 1 GB per day, and once that daily limit is reached the speed drops to 5000 kbps. For example, the Japan unlimited data for 5 days plan costs $16.90 USD, offers 5 days of validity, and reduces speed after the 1 GB/day cap.

Travelers who need more data without the daily cap can choose a fixed‑data plan instead. A 50 GB plan for 30 days is available for $47.60 USD, while a 30 GB plan for 30 days costs $31.13 USD. These fixed plans give a larger high‑speed data allowance and can be more cost‑effective for heavy data users.

ChillaxSIM does not provide Japanese eSIM plans that include a phone number or SMS capability. The company only offers data‑only eSIMs for Japan. Travelers who want to make voice calls or send text messages can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection.

ChillaxSIM lists 30 single‑country data plans for Japan and no multi‑country plans are sold exclusively for Japan. The plans range from $1.50 to $70.00 and offer data caps between 1 GB and 50 GB over validity periods of 1 to 60 days. Some plans provide a fixed data amount for the whole validity period while others give a daily data cap, allowing a set amount of data each day. Tethering is allowed on several plans, though some may incur reduced speeds of 128 kbps or 5000 kbps under certain conditions.