Billion Connect eSIM Data Plans for Japan

Billion Connect does provide unlimited data eSIM plans that cover Japan. The provider offers plans ranging from 1 day to 30 days in validity, with prices starting at about $2.53 USD for a 1‑day Global eSIM that includes Japan and extending to around $46.04 USD for a 30‑day Global eSIM. In addition, there are Japan‑specific unlimited plans priced between $11.60 and $15.75 USD for a 1‑day validity. All of these unlimited plans note that speed may be throttled after heavy usage; a Fair Usage Policy applies, and users may want to contact Billion Connect directly to confirm the typical amount of data available at normal speed under that policy.

Billion Connect does not provide any Japan eSIM that includes a local phone number or SMS capability. All of its eSIM offerings for Japan are data‑only plans; travelers can still use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection for voice calls and messaging.

Billion Connect supplies 48 single‑country data plans and 67 multi‑country data plans for Japan. The available packages range in price from about $1.07 to $169.03 and cover data caps from 500 MB up to unlimited. Some of the plans deliver a fixed data allowance, while others cap the data on a daily basis—42 plans offer a daily data cap and 73 provide a fixed data amount. The plans often allow tethering, with a reduced speed of 128 kbit/s and potential throttling.