Travelsim Asia eSIM Data Plans for Japan

Travelsim Asia does not provide a plan with unlimited data for Japan. All available Japanese eSIM options use fixed data caps. The largest is a 50GB bundle valid for 30 days, and a 20GB bundle also valid for 30 days. Other multi‑country packs contain 20GB for Japan and remain fixed for 30 days as well. If a traveler expects very high data usage, these fixed‑data plans can be more cost‑effective than repeatedly topping up a pay‑as‑you‑go option, though they are still capped.

Travelsim Asia does not offer an eSIM for Japan that includes a local phone number or SMS capability. The provider only sells data‑only plans for this destination, so travelers who need inbound or outbound voice and text services will need to rely on VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. It is advisable to confirm that these apps are accessible in Japan before purchasing a plan.

TravelSim Asia provides 6 single‑country data plans that cover Japan and 7 multi‑country plans that include Japan. In total, there are 13 data plans available for travelers visiting Japan. The plans range in price from $3.99 to $120.99 USD and offer data caps between 1 GB and 50 GB, with validity periods spanning 7 to 180 days. Some plans allow tethering, providing additional flexibility for users who want to share data across multiple devices.