Comet SIM
CometSIM is a travel eSIM store offering prepaid mobile data plans for 190+ destinations worldwide — including single-country, regional, and global plans. Operated by Furvexo LLC (United States). All plans are data-only and delivered instantly as a QR code by email — no physical SIM, no roaming fees, no contracts. Travelers keep their home number for calls and texts while using CometSIM for data. Plans are priced in USD and start low, with a range of data sizes and validity periods. Coverage uses local partner networks with 4G/5G where available.
Comet SIM eSIM Data Plans for Japan
Data plans for this provider are automatically updated. While we strive to keep the information accurate, we cannot guarantee its completeness or accuracy. Please confirm all details on the provider's official website or app before purchasing.
Comet SIM for Japan FAQ
Does Comet SIM offer unlimited data eSIM for Japan?
Comet SIM does not provide an unlimited data eSIM plan for Japan. All of the Japan‑specific offers listed by the provider are fixed data plans that must be used within a set validity period.
For travelers who need a larger allocation, Comet SIM offers fixed data plans such as the Japan — Tokyo, Osaka & Nationwide Data eSIM with 20GB of high‑speed data valid for 30 days and a similar 10GB, 30‑day option. These fixed data plans can be more cost‑effective for most users, unless a traveler expects to use more than the available data, in which case a pay‑as‑you‑go plan would be an alternative.
Does Comet SIM offer Japan eSIM with phone number and SMS?
Comet SIM does not provide a phone number or SMS capability for its Japan eSIM plans. Travelers who need calls or text messages can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but they should verify that those services work in Japan before purchasing a plan.
How many data plans does Comet SIM offer for Japan?
Comet SIM offers five single country plans for Japan and ten multi country plans. The available plans cover a price range from $3.90 to $119.90 and data caps between 1 GB and 20 GB, with validity periods from seven to thirty days. The plans are structured around two principal concepts: a fixed data amount that is available for the entire validity period, and a daily data cap that accumulates over the chosen duration, giving travelers flexibility in how they use their data.
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