Japan Unlimited Data eSIM
Unlimited Japan data via QR install — no SIM swap, no queues. Use coupon for the best price.
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Coupons & deals
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What it is
Skip the airport SIM queue and get online the moment you land. Japan travel eSIMs deliver unlimited mobile data via Japan's top 4G/5G networks — installed in minutes by scanning a QR code before you leave home. No physical card, no counter pickup, no roaming bill surprises.
Highlights
- Instant QR-code install — download the eSIM profile on Wi-Fi before departure; your physical SIM stays in place
- Connects to major Japanese networks (NTT Docomo / SoftBank / KDDI) for broad 4G LTE and 5G coverage across cities, rural areas, and popular sightseeing regions
- Unlimited data plans available in common validity windows (5 / 7 / 10 / 15 / 30 days) to match your itinerary
- Tethering / mobile hotspot supported on most plans — share your connection with travel companions or a laptop
- No SIM swap needed — works alongside your existing SIM; keep your home number active for calls
- Activate anytime before or after arrival; validity countdown starts from first use, not purchase date (varies by plan)
Good to know
- eSIM-compatible device required — confirm your phone supports eSIM before purchasing (most flagship iPhones from XS onward and many recent Android models qualify)
- Data-only plan — no Japanese phone number, no voice calls, no SMS; use WhatsApp, FaceTime, LINE, or similar apps over data for calls and messaging
- Fair-use throttling applies: 'unlimited' plans typically reduce speeds after a daily high-speed threshold (often 1–3 GB/day); standard browsing, maps, and streaming remain usable but heavy downloads may slow
- Install the eSIM profile before boarding using Wi-Fi; do not activate until you need Japanese data to avoid consuming your validity period in transit
- Hotspot allowance varies by plan and provider — check the specific plan's tethering limit; some plans cap hotspot while leaving device data uncapped
- One eSIM profile per purchase; the profile cannot be transferred to another device once installed
Frequently asked
- Do I need to visit a store or swap my SIM card?
- No. After purchase you receive a QR code by email. Scan it in your phone's SIM/eSIM settings while on Wi-Fi — the profile installs in under a minute. Your original SIM card stays in your phone and keeps working for calls and home-country texts.
- Will I have coverage outside Tokyo and Osaka?
- Yes. Plans running on NTT Docomo cover the most rural ground in Japan, including mountainous areas, smaller islands, and regional cities. SoftBank and KDDI offer strong urban and highway coverage. Check which network your chosen plan uses if rural travel is on your itinerary.
- Can I make phone calls with this eSIM?
- Not traditional calls or SMS — Japan travel eSIMs are data-only and do not include a Japanese phone number. For voice, use internet-based apps (WhatsApp, LINE, FaceTime, Google Meet) over the data connection.