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Last updated: May 2026 | Prices checked: May 2026 (prices and plans change — always verify on the provider’s official site before buying)
An eSIM is the fastest, simplest way to get mobile data for Japan travel. You buy a plan online, scan a QR code before your flight, and have data the moment you land — no queuing at a vending machine, no physical SIM to lose. This guide compares the four most-used Japan eSIM options for English-speaking tourists and short-term visitors: Airalo, Ubigi, Holafly, and Mobal.
Who this guide is for
- Tourists visiting Japan for 3–90 days
- Digital nomads on a short stay
- Business travellers who need reliable data
- Anyone deciding between eSIM, pocket WiFi, and a physical SIM card
This guide is not for: long-term residents needing a resident SIM contract (see our Japan SIM Card Guide for Residents).
Quick Answer: Which Japan eSIM Should You Choose?
| Best for | Provider | Why |
|---|---|---|
| Best overall (short trips) | Airalo | Flexible data caps, dual network (Softbank + KDDI), competitive prices, hotspot supported |
| Best unlimited (7–30 days) | Ubigi | Transparent FUP (25 GB full speed on 7-day plan), KDDI + Docomo coverage, hotspot allowed |
| Best unlimited (convenience) | Holafly | True unlimited positioning, daily hotspot 1 GB, 4G/5G, simple pricing by day |
| Best with Japanese phone number | Mobal | Only option with a real Japanese 070/080/090 number; monthly plan suits long stays |
| Best budget (light use) | Airalo 1–3 GB plans | Cheapest entry point for maps + messaging only |
| Prefer shared Wi-Fi device | Pocket WiFi rental | Share one connection with a group; no eSIM phone required |
Japan eSIM Comparison Table
Prices approximate at time of check (May 2026). Verify current pricing and plan availability on each provider’s official site before purchasing.
| Provider | Plan type | Data / validity | Approx. price | Network | Hotspot | Phone number | Unlimited? |
|---|---|---|---|---|---|---|---|
| Airalo | Data-capped | 1 GB / 3 days 3–10 GB / 7 days 5–20 GB / 15 days 5–20 GB / 30 days |
From ~$5 From ~$9 From ~$12 From ~$12 |
Softbank + KDDI | ✅ Yes | ❌ No | ❌ Capped |
| Ubigi | Data-capped & unlimited | 5 GB / 30 days 10 GB / 30 days 20 GB / 30 days Unlimited / 7 days Unlimited / 15 days Unlimited / 30 days |
$8/mo $16.50 $19/mo $25 $39 $65 |
KDDI + NTT Docomo | ✅ Yes | ❌ No | ⚠️ FUP applies (see below) |
| Holafly | Unlimited | Unlimited / 5 days Unlimited / 7 days Unlimited / 30 days Unlimited / 90 days |
~$19 ~$27 ~$69 ~$99 |
4G LTE / 5G | ⚠️ 1 GB/day | ❌ No | ⚠️ FUP applies (see below) |
| Mobal | Monthly SIM/eSIM | 1–30 GB / 30 days (flexible monthly) |
From ¥1,650/mo | Softbank + Docomo | ✅ Yes | ✅ Japanese number | ❌ Capped |
Airalo Japan eSIM
Best for: Short trips (3–15 days), light to moderate data use, travellers who know roughly how much data they need.
Airalo is the most widely-used eSIM marketplace for Japan. Plans run on both the Softbank and KDDI networks — Japan’s two most urban-focused carriers — giving solid 4G/5G coverage in cities, tourist areas, and along Shinkansen routes.
- Network: Softbank + KDDI (dual network)
- Data: Capped plans from 1 GB to 20 GB
- Validity: 3, 7, 15, and 30-day plans
- Tethering / hotspot: Supported (you use your purchased data allowance)
- Phone number: Not included (data only)
- Activation: QR code; plan activates when you connect to a supported network
Typical pricing (May 2026): Entry plans start around $5 for 3 days/1 GB; a popular 7-day/5 GB plan is approximately $11; a 30-day/20 GB plan runs around $27. Prices vary by your local currency — check Airalo’s site for current rates.
Strengths: Large plan selection, competitive pricing, easy app and QR installation, good reputation for support.
Limitations: No unlimited option; no Japanese phone number; if you exceed your data, you need to top up or buy a new plan.
Verdict: Airalo is the practical default for most Japan tourists. If you know you need 5–10 GB for a week, it’s hard to beat on price and reliability.
View current Airalo Japan plans → (affiliate link — commission may apply)
Ubigi Japan eSIM
Best for: Heavy data users, video streamers, remote workers, anyone who wants an honest unlimited plan with transparent FUP terms.
Ubigi (by Transatel/NTT) runs on both KDDI and NTT Docomo networks. Docomo has the widest rural coverage in Japan, making Ubigi a strong choice if you plan to travel beyond major cities.
- Network: KDDI + NTT Docomo (best rural coverage of the four)
- Data: Capped plans (5 GB, 10 GB, 20 GB) plus unlimited plans
- Unlimited plan FUP:
- 7-day plan ($25): 25 GB full speed, then 2 Mbps for the remainder
- 30-day plan ($65): 60 GB full speed, then 2 Mbps for the remainder
- Tethering / hotspot: Explicitly supported on all plans
- Phone number: Not included
- Activation: Smartstart — activates automatically on arrival
At 2 Mbps (the throttled speed): enough for messaging, maps, and standard web browsing. Video quality drops to around 480p. Not ideal for video calls or remote work.
Strengths: Docomo network (best Japan rural coverage), clear FUP terms, tethering allowed, monthly plan option for longer stays.
Limitations: Higher price than Airalo for capped plans; unlimited pricing is premium.
Verdict: Best choice if you need unlimited data with transparent throttling terms, or if you’re heading to rural Japan where Docomo coverage matters.
View current Ubigi Japan plans →
Holafly Japan eSIM
Best for: Travellers who want a simple “unlimited” plan without worrying about data limits, especially for shorter trips (5–14 days).
Holafly sells unlimited-data eSIMs across many countries. Japan plans run on 4G LTE and 5G networks.
- Network: 4G LTE / 5G (carrier not publicly listed; coverage is strong in urban areas)
- Data: Unlimited (with Fair Use Policy — see note)
- Validity: Plans from 5 to 90 days; priced at approximately $3.90 per day
- Tethering / hotspot: Limited — 1 GB per day can be shared
- Phone number: Not included
Pricing (May 2026): 5-day plan approximately $19; 7-day plan approximately $27; 30-day plan approximately $69. Prices can vary — verify on Holafly’s site.
Strengths: Simple unlimited positioning, no data anxiety for casual users, 5G where available, widely reviewed and trusted.
Limitations: Hotspot capped at 1 GB/day; FUP daily threshold not publicly disclosed; more expensive per day than Airalo for shorter trips with moderate data needs; speed after throttle is slow for streaming.
Verdict: Good for casual browsing, social media, and maps without counting GB. Not ideal for heavy hotspot users, video streamers, or remote workers expecting consistent speeds all day.
View current Holafly Japan plans → (affiliate link — commission may apply)
Mobal Japan eSIM — For Long Stays and Japanese Phone Numbers
Best for: Long-stay visitors, business travellers, and anyone who specifically needs a Japanese phone number (070/080/090).
Mobal is different from the other three providers. It offers monthly SIM and eSIM plans on the Softbank and Docomo networks, with a real Japanese phone number included. This matters when you need to:
- Open certain online services that require Japanese SMS verification
- Make and receive calls on a local Japanese number
- Stay beyond 30 days on a flexible monthly contract
- Network: Softbank + Docomo
- Japanese phone number: Yes — a real 070/080/090 number
- Plans: Monthly from approximately ¥1,650 (1 GB); larger data tiers available
- Contract: No fixed term; cancel anytime
- Tethering: Supported on Voice+Data plans
- SIM delivery: Physical SIM card or eSIM; free pickup at 30+ Japan locations (airports, stations)
Limitations: More expensive for short trips than tourist eSIMs; monthly billing may be inconvenient for a one-week holiday; ID verification required.
Verdict: Not for typical tourists. Use Mobal if you need a Japanese phone number or a no-contract monthly plan for an extended stay. Long-term residents are usually better served by a standard resident SIM — see our Japan SIM Card Guide.
View current Mobal Japan plans →
Japan eSIM vs Pocket WiFi
| eSIM | Pocket WiFi | |
|---|---|---|
| Setup | QR scan before departure; instant on arrival | Pick up at airport or hotel delivery |
| Sharing with others | Hotspot only (limited by plan) | Multiple devices connect directly |
| Battery impact | Minimal (runs on your phone’s modem) | Carry a separate device; needs charging |
| Coverage | Depends on provider network | Usually single carrier |
| Cost (1 person, 7 days) | ~$9–$27 depending on data | ~$5–$10/day rental + return fee |
| Losing the device | No physical device to lose | Loss fees can be expensive |
| Best for | Solo or dual travellers; eSIM-compatible phones | Groups of 3+; older phones without eSIM |
Recommendation: For most solo and couple travellers with eSIM-compatible phones, an eSIM is cheaper, simpler, and lower-risk than a pocket WiFi rental. Use pocket WiFi only if you’re sharing with a group or your phone doesn’t support eSIM.
Choosing by Trip Type
| Your situation | Recommended |
|---|---|
| Solo traveller, 7 days, casual use | Airalo 5 GB / 7 days |
| Solo, 7 days, heavy streaming | Ubigi Unlimited 7 days ($25) or Holafly 7 days (~$27) |
| Couple sharing one hotspot | Ubigi (hotspot explicitly supported) or Airalo large plan |
| Family / group (3+ devices) | Pocket WiFi rental or each person with their own eSIM |
| Remote worker / digital nomad | Ubigi Unlimited (transparent FUP) or Airalo 20 GB |
| Business traveller needing Japanese number | Mobal |
| Long stay (30–90 days) | Ubigi monthly or Airalo 30-day plan; or Mobal if number needed |
| Rural / off-the-beaten-path Japan | Ubigi (Docomo network — best rural coverage) |
How Much Data Do You Need in Japan?
These are rough estimates only — actual usage depends on your habits, video quality settings, and whether you use hotspot.
| Usage type | Approx. daily data | 7-day trip |
|---|---|---|
| Maps + messaging (WhatsApp, LINE) only | ~100–200 MB/day | ~1–1.5 GB |
| Maps, messaging, and light browsing | ~300–500 MB/day | ~2–3.5 GB |
| Social media (Instagram, TikTok) | ~500 MB–1 GB/day | ~3.5–7 GB |
| Video calls (FaceTime, Zoom) | ~1–2 GB/day | ~7–14 GB |
| Remote work (video + uploads) | ~2–4 GB/day | ~14–28 GB |
| Sharing hotspot with 1–2 others | Multiply above by 1.5–2× | Plan for 20 GB+ |
Rule of thumb for most tourists: 5–10 GB covers a week of normal use including Google Maps, social media, and occasional video calls. If you stream YouTube or Netflix daily, plan for 15 GB+.
How to Install a Japan eSIM
- Check eSIM compatibility: Go to your phone’s Settings → look for “eSIM,” “Add Mobile Plan,” or “Dual SIM.” Not all phones support eSIM — check your model on the provider’s compatibility page before buying.
- Check your phone is unlocked: Carrier-locked phones may not accept foreign eSIMs. Contact your carrier or check Settings → General → About → look for “SIM lock.”
- Buy your plan before departure: Most providers recommend installing the eSIM while on Wi-Fi at home, before you fly.
- Scan the QR code: Go to Settings → Mobile/Cellular → Add eSIM → Scan QR Code. Use the QR code from your purchase confirmation email.
- Label the line clearly: Name it “Japan eSIM” to avoid confusion with your home SIM.
- Set data roaming ON for the Japan eSIM line and set your home SIM line to data roaming OFF (to avoid unexpected charges on arrival).
- Save the QR code as a screenshot — some providers’ QR codes can only be scanned once. If you need to reinstall, contact support.
After landing: Enable the Japan eSIM line. Most plans activate automatically when your phone connects to a local network. Allow 1–5 minutes for the plan to fully activate.
Common Japan eSIM Problems and Fixes
| Problem | Fix |
|---|---|
| No signal after landing | Toggle aeroplane mode on/off; ensure Japan eSIM line is selected for data; check data roaming is ON |
| QR code won’t scan | Ensure you have a Wi-Fi connection; ask provider to email a new QR or use their app |
| “QR already used” error | eSIM may already be installed — check Settings → Mobile → eSIM list; contact provider if missing |
| Data not working but signal shows | Check APN settings (provider’s website has the correct APN); toggle cellular data off/on |
| Home SIM charging roaming fees | Set home SIM line to data roaming OFF; only use Japan eSIM for data |
| Can’t make calls | Travel eSIMs are data-only; use WhatsApp, FaceTime, or LINE over data; only Mobal includes a voice number |
| Can’t receive SMS verification | Your Japan eSIM has no SMS number; use your home SIM for SMS, or use a service like Mobal that includes a Japanese number |
| Phone says “SIM not supported” | Phone may be carrier-locked; contact your carrier to unlock before travel |
When You Should Not Use a Travel eSIM
- Your phone is SIM-locked — contact your carrier to unlock before travelling.
- Your phone doesn’t support eSIM — older Android phones and some budget models lack eSIM support. Use a physical SIM card or pocket WiFi instead.
- You need a Japanese phone number — travel eSIMs are data-only. Use Mobal or a resident SIM for a Japanese number.
- You’re moving to Japan long-term — a resident SIM with a Japanese number and monthly plan is a better fit. See our Japan SIM Card Guide for Residents.
- You need to share connection with a large group — pocket WiFi rental is more practical for 3+ people sharing one device.
First Visit Setup Checklist
Before your flight
- ☐ Confirm your phone model supports eSIM and is network-unlocked
- ☐ Buy your plan; install eSIM on Wi-Fi at home
- ☐ Screenshot or save the QR code
- ☐ Label the eSIM line “Japan eSIM”
- ☐ Set data roaming: Japan eSIM ON, home SIM OFF
- ☐ Download offline maps for Japan (Google Maps or Maps.me)
After landing
- ☐ Enable Japan eSIM line; wait 1–5 minutes for activation
- ☐ Confirm data is working (open maps or browser)
- ☐ Check data balance in provider app
- ☐ Set up cashless payments (IC card, QR code apps)
Planning your first Japan trip? Read our First Time in Japan complete guide for transport, money, etiquette, and what to prepare before you fly.
Frequently Asked Questions
Is eSIM better than pocket WiFi in Japan?
For most solo and couple travellers with eSIM-compatible phones, yes. An eSIM is cheaper (no daily rental fee), requires no pickup or return, and leaves your hands free. Pocket WiFi is better for groups sharing one connection or travellers with older phones that don’t support eSIM.
Which Japan eSIM is best for tourists?
Airalo is the most practical for most tourists: competitive prices, good coverage on Softbank and KDDI, flexible plan sizes, and hotspot support. For heavy data users or remote workers, Ubigi’s unlimited plans with transparent FUP terms are a strong alternative.
Do Japan eSIMs include a Japanese phone number?
No. Airalo, Ubigi, and Holafly are all data-only eSIMs — they have no phone number. You can use WhatsApp, LINE, FaceTime, and other apps over data, but you cannot make or receive standard phone calls, and you cannot receive SMS to a Japanese number. Mobal is the exception — their monthly SIM/eSIM includes a real Japanese 070/080/090 number.
Can I use WhatsApp or LINE with a Japan eSIM?
Yes. All four providers offer internet data, and apps like WhatsApp, LINE, FaceTime, and Zoom work normally over the data connection.
Does eSIM work in rural Japan?
Coverage varies by provider. Ubigi uses KDDI + NTT Docomo, giving the best rural coverage among these four options. Docomo covers the widest geographic area in Japan including rural Tohoku, Kyushu, and Hokkaido. Airalo (Softbank + KDDI) has excellent urban and along-rail coverage but may be patchier in very remote areas.
Can I install a Japan eSIM before I fly?
Yes, and it’s recommended. Install the eSIM at home while on Wi-Fi. The plan typically activates automatically when your phone first connects to a supported Japan network after you land. Check with your provider — some plans start counting from the moment you scan the QR code, others from first use in Japan.
How much data do I need for 7 days in Japan?
For typical tourist use — maps, messaging, photos, and occasional social media — budget 5–7 GB for a week. If you stream video or share a hotspot, plan for 10–15 GB or consider an unlimited plan with a clear FUP.
What happens when I run out of data?
On Airalo, data simply stops. You can top up through the app. On Ubigi unlimited plans, speeds reduce to 2 Mbps after the FUP threshold (still usable for maps and messaging). On Holafly, speeds are throttled according to their fair use policy. Plan ahead and check your remaining data daily in the provider’s app.
Can I use tethering with a Japan eSIM?
Airalo and Ubigi explicitly allow tethering (you share from your purchased data). Holafly allows 1 GB per day of hotspot sharing. Be aware that hotspot drains your allowance faster than phone-only use.
Should Japan residents use a travel eSIM?
No. Residents should have a permanent SIM with a Japanese phone number on a resident contract. Travel eSIMs are more expensive per GB, have no phone number, and are designed for short-term visits. See our Japan SIM Card and Phone Plan guide for residents.
Related Guides
- First Time in Japan: Complete Visitor Guide — what to prepare, transport, money, and practical tips
- Japan Travel Hub — all travel guides
- Japan SIM Card and Phone Plan for Residents — if you’re moving long-term
- Japan Cashless Payment Guide — IC cards, QR codes, and contactless payments
- Moving to Japan Checklist — if this is a scouting trip before a move