abesteSIM eSIM Data Plans for Japan

abesteSIM provides unlimited data eSIM plans for Japan that range in validity from 1 days up to 30 days, with prices from about $2.04 for a 1‑day plan to roughly $55.41 for a 30‑day plan. Some unlimited plans include a maximum speed limit— for instance, a 1‑day plan with 4G/5G coverage has a max speed of 5000kbps, and the 30‑day plan caps at 10000kbps. While speeds may be throttled after heavy usage under a Fair Usage Policy, normal speed is typically available up to the stated limit. Travelers who wish to confirm how speeds are affected after significant data use should contact abesteSIM directly.

abesteSIM offers a total of 86 single‑country plans and 97 multi‑country plans that cover Japan. The plans span a price range from roughly $0.70 to $124.78 and data caps from 500 MB to unlimited, providing options that differ between fixed data amounts—where the customer receives a set quantity of data for the plan period—and daily data caps—where a daily limit is enforced. Prices and caps vary, allowing travelers to choose a plan that fits short stays of only a day to stays lasting up to 60 days.