Japan eSIM
Stay connected in Japan from €1.11. Instant eSIM with 5G data, delivered by QR — no physical SIM and no roaming bills.
Networks in Japan
Your eSIM connects automatically to DOCOMO, KDDI, NTT Docomo, Inc and Softbank at up to 5G speeds, picking depending on your selected plan, device and location.
Japan data plans
116 plans available · cheapest first, including 74 unlimited.
1 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now3 days · 4G · €1.34/GB
Buy now5 days · 4G · €1.46/GB
Buy now1 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now7 days · 4G · €1.55/GB
Buy now10 days · 4G · €1.67/GB
Buy now1 days · 5G
Buy now15 days · 4G · €1.79/GB
Buy now30 days · 4G · €1.88/GB
Buy now2 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now3 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now3 days · 4G · €0.89/GB
Buy now5 days · 4G · €0.93/GB
Buy now7 days · 4G · €0.96/GB
Buy now3 days · 4G · €0.59/GB
Buy now2 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now4 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now10 days · 4G · €1.04/GB
Buy now15 days · 4G · €1.07/GB
Buy now5 days · 4G · €0.64/GB
Buy now30 days · 4G · €1.11/GB
Buy now2 days · 5G
Buy now5 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now3 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now7 days · 4G · €0.73/GB
Buy now10 days · 4G · €0.76/GB
Buy now3 days · 5G
Buy now15 days · 4G · €0.84/GB
Buy now6 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now30 days · 4G · €0.91/GB
Buy now7 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now4 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now8 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now4 days · 5G
Buy now3 days · 4G · €0.57/GB
Buy now9 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now5 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now5 days · 4G · €0.62/GB
Buy now10 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now5 days · 5G
Buy now7 days · 4G · €0.67/GB
Buy now6 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now11 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now10 days · 4G · €0.72/GB
Buy now12 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now7 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now15 days · 4G · €0.78/GB
Buy now6 days · 5G
Buy now30 days · 4G · €0.81/GB
Buy now13 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now8 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now14 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now7 days · 5G
Buy now1 days · 5G
Buy now15 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now16 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now9 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now8 days · 5G
Buy now17 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now10 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now18 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now3 days · 4G · €0.57/GB
Buy now19 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now9 days · 5G
Buy now5 days · 4G · €0.60/GB
Buy now11 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now20 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now7 days · 4G · €0.63/GB
Buy now10 days · 5G
Buy now10 days · 4G · €0.67/GB
Buy now12 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now15 days · 4G · €0.71/GB
Buy now13 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now11 days · 5G
Buy now30 days · 4G · €0.75/GB
Buy now25 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now14 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now12 days · 5G
Buy now3 days · 4G · €0.54/GB
Buy now15 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now13 days · 5G
Buy now5 days · 4G · €0.57/GB
Buy now16 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now7 days · 4G · €0.61/GB
Buy now14 days · 5G
Buy now30 days · 4G · First 1GB/day at full speed, then 256kbps
Buy now17 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now10 days · 4G · €0.65/GB
Buy now15 days · 5G
Buy now18 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now15 days · 4G · €0.68/GB
Buy now16 days · 5G
Buy now19 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now30 days · 4G · €0.72/GB
Buy now20 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now17 days · 5G
Buy now3 days · 5G
Buy now18 days · 5G
Buy now3 days · 4G · €0.49/GB
Buy now19 days · 5G
Buy now5 days · 4G · €0.52/GB
Buy now20 days · 5G
Buy now7 days · 4G · €0.56/GB
Buy now25 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now10 days · 4G · €0.60/GB
Buy now15 days · 4G · €0.62/GB
Buy now25 days · 5G
Buy now30 days · 4G · €0.67/GB
Buy now30 days · 4G · First 2GB/day at full speed, then 256kbps
Buy now5 days · 5G
Buy now30 days · 5G
Buy now7 days · 5G
Buy now10 days · 5G
Buy now15 days · 5G
Buy now20 days · 5G
Buy now30 days · 5G
Buy nowWhy travelers choose Roamsim in Japan
- Instant delivery — your Japan eSIM arrives by QR seconds after payment.
- Flat, upfront pricing — no bill shock, no roaming surprises.
- Keep your main number while using local data on a second line.
- 24/7 in-app support from real people, wherever you travel.
Japan eSIM by plan size
Already know how much data you need? Jump straight to it.
Regional plans that cover Japan
Visiting more than one country? These regional eSIMs include Japan and are usually cheaper than buying each destination separately.
Japan eSIM — FAQ
How do I get an eSIM for Japan?
Pick a Japan data plan below, pay by card or crypto, and we deliver your eSIM instantly. Scan the QR code and you're connected in minutes — no physical SIM, no store visit.
Will my phone work with a Japan eSIM?
Most phones from the last few years support eSIM, including iPhone XS and newer, Google Pixel 3+, and recent Samsung Galaxy S/Z models. Your phone must be carrier-unlocked.
Does the Japan eSIM include 5G?
Yes — our Japan plans connect to 5G where the local network supports it, and fall back to 4G/LTE automatically.
Which network will I connect to in Japan?
Our Japan plans use partner networks including DOCOMO, KDDI, NTT Docomo, Inc and Softbank. Available networks depend on the selected plan, device and location.
Is there a plan that covers Japan and other countries?
Yes. Asia, Global Lite, Global Max and Global are regional plans that include Japan, which is usually cheaper than buying each country separately on a multi-stop trip.
Can I keep my own phone number?
Yes. The eSIM runs as a separate data line, so you keep your main number for calls and texts while using Japan data on the eSIM.
When does my plan start?
Activation rules vary by plan. Check the activation note at checkout before installing your Japan eSIM; some plans start on connection or first data use, while others have different activation rules.
Ready for Japan?
Get connected from €1.11 — installed before you land.