Japan eSIM — stay connected
Blazing-fast data the moment you land — from Tokyo and Kyoto to Mt. Fuji, Hokkaido and the Shinkansen. One eSIM, all of Japan on the SoftBank & KDDI dual network.
Japan data plans
First time? Check your phone supports eSIM — or choose a physical SIM below.
Plan specifications
No eSIM? Choose a physical SIM for Japan.
Works exactly like the eSIM — the best option for phones that can't use one.Phone doesn't support eSIM?
Some phones don't support eSIM at all. The RORO physical SIM works in any unlocked phone, with the same fast data across Japan.
Japan — key facts.
Blazing-fast, nationwide
RORO partners with two networks — SoftBank and KDDI (au), so your phone always hops to the strongest signal from Tokyo to rural onsen towns.
Covers all of Japan
From Tokyo and Osaka to Hokkaido, Okinawa and rural onsen towns — one plan covers the whole country, no border swaps.
Phone can't use eSIM? Choose the physical SIM
Some phones — especially older or budget models — don't support eSIM at all. The RORO physical SIM works in any unlocked phone with the same fast data across Japan.
No ID registration
There's no passport scan or registration to buy a Japan eSIM. Buy with just an email — then go.
Validity starts on arrival
The clock starts on your first connection in Japan, not the purchase date. Buy up to 180 days in advance and install before you fly.
Top up instantly
Running low? Add more data in seconds — no new QR code, no reinstall needed. Tip: top up before you run out to avoid a gap in service.
How to Set Up Your Japan eSIM
No app download needed. Set up before you fly, then it auto-connects the moment you land.
Install your SIM
eSIM: connect to WiFi, scan the QR code with your rear camera — installed in a minute. Physical SIM: insert the card, then top up online.
Enable data roaming
Settings → Cellular / Mobile Service → tap RORO (CMLink) → scroll down → turn on Data Roaming.
Set as data SIM & go
Settings → Cellular / Mobile Service → Cellular Data / Mobile Data → select RORO (CMLink). Auto-connects to KDDI after you land.
Install your SIM
eSIM: connect to WiFi, scan the QR code with your rear camera — installed in a minute. Physical SIM: insert the card, then top up online.
Enable data roaming
Settings → Connections → SIM Manager → tap RORO (CMLink) → enable Data Roaming.
Set as data SIM & go
SIM Manager → Mobile Data → select RORO (CMLink). Auto-connects to KDDI after you land.
Japan travel tips.
Practical notes from verified customers — signal spots, apps that work, and what to expect city by city.
Offline maps before you go
Download maps on WiFi so navigation keeps working even on the subway or in rural areas.
How fast is RORO Japan eSIM?
On 5G you can expect roughly 100–300 Mbps in cities like Tokyo and Osaka, and a comfortable 20–100 Mbps on 4G LTE elsewhere — plenty for HD video, video calls, maps and hotspot. RORO runs across SoftBank and KDDI, switching to whichever signal is strongest; real-world speed depends on location, time of day and load.
Where in Japan does the plan work?
All of Japan on a single plan — Tokyo, Kyoto, Osaka, Hokkaido, Okinawa and rural areas — on the combined SoftBank and KDDI dual network. There are no zones or regional add-ons. A handful of very remote spots outside both carriers' coverage may have no service.
Does it work on the Shinkansen / bullet train?
Yes. RORO holds a strong signal along the Tokaido, Sanyo and Tohoku Shinkansen lines, so you can stream, navigate and work between cities at 300 km/h. Signal dips briefly in the longest tunnels, exactly as it does for any local SIM.
Does RORO work at Japanese airports before clearing customs?
Yes. The moment you land at Narita, Haneda, Kansai or any major airport and switch off airplane mode, RORO connects automatically — so you're online in the arrivals hall and at immigration, before you clear customs. Just install the eSIM before you fly and enable it on arrival.
Do I need to show ID to buy a Japan eSIM?
No. There's no passport scan or registration — buy and activate with just an email address. The RORO physical SIM is the same: no ID needed either.
When does the validity period start?
Validity starts when you first connect to a network in Japan — not the purchase date. The eSIM stays valid to activate for 180 days. We recommend installing it 1–3 days before you travel, then enabling it when you land. For a physical SIM, order it about a week before departure so it arrives in time.
How do I top up or extend my plan if I run out of data?
Easily. Top up online any time from your RORO account or the app — no new QR code and no reinstall. Your eSIM keeps the same number and settings. Tip: top up before your data runs out, since with zero data you can't get online to recharge.
Can I get a physical SIM card instead of an eSIM?
Yes. RORO offers physical SIM cards for Japan. Shipping to Japan takes 3–5 days (a small delivery fee applies), and we ship worldwide too. Each card comes with 1 GB included — use it to top up to any plan online once it arrives. Same fast data as the eSIM.
Does it support hotspot / tethering?
Yes. Data by GB plans allow full hotspot sharing — use your whole allowance as a mobile hotspot. Daily unlimited plans include a 500 MB/day hotspot limit. Either way you can share with a laptop or tablet anywhere in Japan.
What payment methods are accepted?
We accept credit & debit cards (Visa, Mastercard, JCB, American Express), PayPal, Apple Pay and Google Pay. No ID is required for card payments.
Will this replace my original phone number?
No. RORO runs as a second line in dual-SIM mode and is data-only. Your original SIM keeps making calls, receiving SMS, and running apps like WhatsApp and LINE as usual — RORO only handles your data.
Can I use my home SIM and RORO at the same time on a dual-SIM phone?
Yes. On a dual-SIM phone both lines stay active simultaneously — keep your home SIM for calls and texts, and set RORO as your data line in settings. There's nothing to swap mid-trip. If your phone can't use the RORO eSIM, the physical SIM works the same way in your second SIM slot.
Which Japanese network does RORO use?
RORO Japan runs on two of Japan's major carriers — SoftBank and KDDI (au) as a dual network. Your phone automatically connects to whichever signal is strongest, for uninterrupted service and the widest coverage nationwide — cities, rural areas, mountain resorts and transit lines.
