Quick answer: The best eSIM for Japan depends on how long you stay. For a few days, a 1 GB plan from Yoho Mobile costs $0.74 in the eSIMzee catalog. For one to two weeks, 5 to 10 GB plans cost about $3 to $7. Buy a 30-day plan only if you stay a month.
What is the best eSIM for Japan?
There is no single best plan, only the best plan for your trip length and data use. We checked the eSIMzee catalog for Japan and picked the cheapest plan that fits each type of trip.
| Provider | Plan | Data | Validity | Price (USD) | Notes |
|---|---|---|---|---|---|
| Yoho Mobile | Japan 1GB 7Day | 1 GB | 7 days | $0.74 | Cheapest 1 GB plan. 5G, hotspot |
| Abest eSIM | Japan - 7 Days/Total 5GB | 5 GB | 7 days | $3.10 | Good for one week. 5G, hotspot |
| Abest eSIM | Japan - 15 Days/Total 10GB | 10 GB | 15 days | $6.64 | Good for two weeks. 5G, hotspot |
| Thirr | JP 20GB 30D | 20 GB | 30 days | $9.06 | Long stays. 5G, hotspot |
| Abest eSIM | Japan - 7 Days/Daily 500MB | 500 MB per day | 7 days | $2.31 | Daily allowance. 5G, hotspot |
| eSIMflare | Japan 20GB 30Days | 20 GB | 30 days | $12.70 | Top-up available. Hotspot, no 5G |
Prices from the eSIMzee catalog, checked on 7 November 2026. Providers change prices often. All plans above are data-only: the catalog lists no calls or SMS for them.
Which plan fits your trip?
- Weekend or short city break: Pick a 1 GB plan. It covers maps, messages and light browsing.
- One week: Pick 5 GB. It handles maps, photos and some video.
- Two weeks: Pick 10 GB, or use the data calculator to size it.
- A month or remote work: Pick 20 GB. Choose a plan with top-up if you may run out.
- Daily plans: They give a fresh allowance each day. Pick one if you hate watching a total shrink.
eSIM, local SIM card or pocket Wi-Fi in Japan?
The Japan National Tourism Organization (JNTO) lists three ways to get online: free Wi-Fi, a rented Wi-Fi device and a SIM card. It says Wi-Fi rental kiosks sit at all major airports. It also says you can buy a SIM card at electronics stores such as Bic Camera or Yodobashi Camera, and gives a rough guide of 3,000 yen for 1 GB over 30 days.
An eSIM skips the kiosk. You buy online before you fly and connect when you land. Choose an eSIM if your phone supports it and you travel alone or as a couple. Choose a rented device if several people share one connection and nobody wants to set up a phone.
Is free Wi-Fi enough in Japan?
Not for the whole trip. JNTO says hotspots are spreading across major cities and major airports offer free Wi-Fi in their terminals. It also says that for guaranteed access, especially in remote areas, Wi-Fi rental is recommended, and that some free services can be patchy and slow. Buy an eSIM if you need maps and messages on the train or in the countryside.
How do I install a Japan eSIM?
An eSIM is a digital SIM built into your phone, so you need no plastic card. Apple lists scanning a QR code or entering the details by hand as ways to add one, and says an iPhone can manage up to eight or more eSIMs.
- Check that your phone supports eSIM with the device checker.
- Buy a plan and open the QR code the provider sends.
- Add a cellular plan in your phone settings and scan the code.
- Name the line "Japan" so you can find it later.
- Turn the Japan line on for mobile data when you land.
Can I keep my home number while in Japan?
Yes. Apple's Dual SIM guide says you can use one number for your home line and another for your travel line. It also says iPhone 13 models and later support two eSIMs alongside a physical SIM. Set your travel eSIM as the line for mobile data, and your home calls and texts keep working.
Apple notes that data switching during a call does not work while Data Roaming is on. Keep roaming off on your home line, since your home carrier may charge for it. Compare more options on the providers page.
Frequently asked questions
Does a Japan travel eSIM include a phone number?
The plans in our table are data only. Use WhatsApp or another app for calls, and keep your home SIM for texts.
Which network will my Japan eSIM use?
Some plan names in the catalog name a network, such as SoftBank or KDDI. Read the plan page before buying, because we do not rate coverage.
Can I use my phone as a hotspot?
Yes. Every plan in our table lists hotspot as available in the catalog. Check the plan page before you buy.
Is an eSIM cheaper than a local SIM card?
In the catalog, 1 GB costs $0.74 and 10 GB costs $6.64. JNTO's rough guide for a store-bought SIM is 3,000 yen for 1 GB over 30 days.
Do I need to install the eSIM before I fly?
Install it at home on Wi-Fi, then switch it on for data when you land. This avoids searching for a connection at the airport.
Sources
- eSIMzee catalog: Japan eSIM plans, eSIMzee, accessed 7 November 2026
- Wi-Fi & Connectivity, Japan National Tourism Organization, accessed 7 November 2026
- Set up eSIM on iPhone, Apple Support, accessed 7 November 2026
- Using Dual SIM with an eSIM, Apple Support, accessed 7 November 2026
