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You’re not on holiday. Your eSIM shouldn’t act like you are.
Here’s the moment that made me start taking this seriously. I was two weeks into a six-week stay in Japan, sitting in a café in Kanazawa with a client call in four minutes, and my “unlimited” eSIM decided my laptop didn’t count as a real device. Phone: full bars. Laptop tethered to it: 500 MB used up by mid-morning, then a crawl. I took that call hunched over my phone screen, thumb-typing apologies.
If you’re visiting Japan for a few days and mostly need Google Maps and a translation app, almost any eSIM will do and you can stop reading — I’ll point you somewhere better in a second. But if you’re staying 30, 60, or 90 days and you actually work from your laptop, the calculus is completely different. You care about three things most travel guides barely mention: whether tethering is truly uncapped, whether the network holds up outside the big cities, and whether the plan lasts as long as you do without forcing you to re-buy every two weeks.
I’ve spent a lot of time on Japanese networks over the last few years, and in my experience the “best eSIM for Japan” lists floating around are written for tourists, not for people running a business from a Shinkansen seat. So this one is for us. Seven providers, ranked for long stays and real laptop work, with the trade-offs stated plainly.
Who this article is not for
Let me save some people time, because the wrong reader will hate my recommendations.
- Short-trip tourists (under ~10 days). If you’re here for a week of sightseeing, you don’t need a 90-day plan or heavy tethering. A cheap 3–10 GB tourist pack is better value. (I’m planning a separate “best Japan eSIM for first-time visitors” guide — link that here once it’s live.)
- People who barely use data. If you’re on hotel Wi-Fi most of the day and just need maps between stops, paying for unlimited or a long validity window is money lit on fire.
- Callers. If you need a real Japanese phone number for reservations, clinics, or landlord calls, most travel eSIMs are data-only. I cover the one exception below, but if voice is your main need, look at a proper long-stay SIM instead (I’ll link a companion guide on that).
Still here? Then you’re my reader: staying weeks to months, working off a laptop, and unwilling to gamble your income on a flaky hotspot.
How I ranked these (three things that actually matter for nomads)
Most comparisons rank by headline price. For a long stay, that’s the least useful lens. Here’s what I weighted instead, in order.
1. Network quality and 5G — especially outside Tokyo. Japan’s three carriers are NTT Docomo, KDDI (au), and SoftBank. Docomo has the reputation for the widest rural and mountain coverage, which matters the second you leave the Yamanote line for a workation in Nagano or a week in Kyushu. An eSIM riding Docomo (and offering 5G) is worth more to a remote worker than a slightly cheaper one that drops to a weak signal in the countryside.
2. Tethering freedom and throttling. This is the one that bites. “Unlimited data” and “unlimited tethering” are not the same promise. Some providers give you all-you-can-eat data on the phone but quietly cap hotspot use per day (Holafly’s 500 MB/day is the classic example). Others don’t cap tethering separately, but slow everything down once you pass a daily full-speed quota. For laptop work, an uncapped, fast hotspot beats a bigger “unlimited” label every time — so read the fine print on both the tethering cap and the daily throttle threshold.
3. Validity length and true cost over a long stay. A 30-day plan you renew twice is fine — until you’re mid-flight on a deadline and it lapses. I favour plans that either run 30+ days cleanly or let you sit on a large data pool for 60–90 days, and I judge cost by what you actually pay across your whole trip, not the sticker price of one pack. As a rough gut-check: a video-call-heavy work week runs me somewhere around 8–15 GB once you add tethering, screen shares, and the inevitable large file upload — so a “10 GB for the month” plan that looks cheap on paper can quietly become three plans by week three. Do the maths on your real weekly usage, not the brochure’s.
One more thing that separates a good long-stay eSIM from a tourist one: what happens after you exhaust an allowance. The better providers let you top up in-app in seconds; the weaker ones make you buy a whole new eSIM and re-scan a QR code, which is exactly the friction you don’t want at 11 p.m. before a launch.
Commission economics are my business, not yours, so they don’t change the ranking — but I’ll note that longer, larger plans are exactly the ones I’d want you to be happy with for months, so my incentives and your interests line up here.
The comparison at a glance
Prices verified July 2026, in USD unless noted. They still drift — confirm on each provider’s own page before you buy. Note the “unlimited” column: most “unlimited” plans give you a generous full-speed daily or total allowance, then slow down.
| Provider | Network / 5G | “Unlimited” reality | Max validity | Tethering | Approx. price (Jul 2026) | Calls/SMS | Best for |
|---|---|---|---|---|---|---|---|
| Ubigi | Docomo + KDDI / 5G | 60 GB full speed, then ~2 Mbps | 30 days, renewable | Not capped separately | 30-day unltd ~$65; 60 GB fixed ~$45 | Data only | Overall nomad pick |
| Saily | Major JP carrier / 5G | 5 GB/day full speed, then ~1 Mbps | 30 days | Not capped separately | 20 GB/mo ~$25; unltd/mo ~$72 | Data only | Value + security-minded |
| Nomad | Major JP carrier | 2 GB/day full speed, then ~1 Mbps | 30 days | Uncapped | 20 GB/30d ~$23; 50 GB/30d ~$35 | Data only | Uncapped tethering on a budget |
| Holafly | SoftBank/KDDI / 5G | Unlimited on-device (fair-use applies) | 30+ days | 500 MB/day cap | 30-day ~$74.90 | Data only | Phone-heavy streaming |
| Airalo | JP carrier / 4G only | Fixed packs (up to 20 GB) | 30 days | Uncapped | 20 GB/30d ~$26; 10 GB ~$18 | Data only | Brand trust, easy first eSIM |
| Jetpac | JP carrier | 30 GB pack, or unltd option | 30 days | Allowed | 30 GB/30d ~$30; unltd ~$66 | Data only | Free data for key travel apps |
| Sakura Mobile | Docomo/au / 5G | Unlimited & fixed tiers | Up to 90 days | Allowed | Docomo 1–90d ~¥1,650–26,400 | Data only on travel eSIM* | Long-stay, in-country support |
*Sakura’s travel eSIMs (90 days and under) are data-only; a real Japanese number with voice/SMS comes via their longer-term voice+data plans, not the travel eSIM.
The seven, reviewed
1. Ubigi — the best all-round eSIM for nomads in Japan
Ubigi is the one I reach for first, and it’s not close. It’s part of the NTT group, so it runs on Japan’s top-tier networks (Docomo and KDDI) with 5G on both, and in my experience that shows up exactly where it counts: I’ve held a usable signal on rural train lines and in small mountain towns where budget eSIMs sagged to a spinner. Its 30-day unlimited plan runs about $65 and gives you 60 GB at full speed before easing to around 2 Mbps; tethering isn’t capped separately, and you can also buy smaller data packs if you’d rather meter yourself.
The detail I appreciate as a worker: because you can top up inside the app, a surprise all-day video workshop doesn’t mean hunting for a new eSIM — you tap, buy another few GB, and you’re back. On a two-day trip to a rural onsen town for a “workation,” that flexibility saved a Friday sprint for me when a 90-minute call turned into three.
Pros: Best-in-class network for rural and inter-city travel; 5G; tethering not capped separately; flexible pay-as-you-go top-ups. Cons: Not the rock-bottom cheapest on a pure per-GB basis; data-only (no voice number). Who it’s for: The remote worker who moves around Japan and can’t afford a dead zone on a work day. If you’re picking one and want to stop thinking about it, pick this.
2. Saily — the value pick with a security streak
Saily comes from the team behind NordVPN, and it leans into that: clean app, straightforward plans, and a security-conscious posture that appeals if you’re logging into work accounts on café Wi-Fi all day. Tethering is uncapped, promo codes show up regularly, and it’s one of the better balances of price and reliability for a long stay.
Pros: Strong value; uncapped tethering; polished app; frequent discount codes; recurring-friendly if you extend. Cons: Network edge isn’t quite Ubigi’s for deep-rural work; data-only. Who it’s for: Budget-aware nomads who still want a dependable hotspot and like the security angle. My usual #2, and often #1 on price.
3. Nomad — uncapped tethering without the premium
Nomad earns its spot by doing the unglamorous thing well: large data packs, no hotspot cap, and pricing that works out sensibly per GB over a month. It’s the option I suggest when someone wants uncapped tethering but flinches at unlimited-plan pricing they won’t fully use.
Pros: Uncapped tethering; good per-GB value on bigger packs; simple. Cons: No true “forget about it” unlimited tier for extreme users; data-only. Who it’s for: The nomad with predictable, heavy-but-not-infinite usage who wants tethering freedom on a budget.
4. Holafly — unlimited that streams beautifully and tethers poorly
Holafly is genuinely unlimited on-device and, unusually, barely makes you feel any throttling in normal phone use — so for video calls, streaming, and phone-side work it’s excellent. But here’s the honest catch, and it’s the exact one that burned me: hotspot/tethering is capped at around 500 MB per day. On your phone, brilliant. Chained to a laptop for eight hours, you’ll hit the wall by lunch. At about $74.90 for 30 days, it’s also the priciest option here.
Pros: Generous unlimited on-device data; strong for streaming and phone-based work. Cons: ~500 MB/day tethering cap is a dealbreaker for laptop-heavy days; most expensive here; data-only. Who it’s for: Long-stay users who mostly work on the phone or off Wi-Fi and tether only occasionally. If your laptop is your office, skip it.
5. Airalo — the trusted name, held back by 4G
Airalo is the eSIM most people have heard of, the app is dead simple, and its Japan packs (its 20 GB / 30-day sits around $26) are fair value with uncapped tethering. The reason it’s mid-table for us rather than top: it’s 4G-only in Japan. For maps and email that’s fine; for a nomad who wants 5G headroom and the strongest rural signal, it’s a real limitation.
Pros: Huge brand trust; easiest first-time setup; uncapped tethering; reasonable pricing. Cons: 4G only (no 5G); network edge trails Ubigi outside cities; data-only. Who it’s for: First-time eSIM users who value a familiar, frictionless app over squeezing out maximum speed.
6. Jetpac — the perks play
Jetpac’s hook is that certain travel apps — think maps and ride-hailing — keep working on free data even when your allowance runs low. For a nomad who’s constantly navigating a new city, that’s a genuine safety net. It won’t replace a serious work plan, but as a clever secondary or for lighter-usage months it has a real niche.
Pros: Free data for key travel apps; good for heavy movers; decent app. Cons: Not the pick for pure heavy laptop work; perks matter more to sightseers than desk-workers. Who it’s for: The always-in-transit nomad who wants navigation to never die.
7. Sakura Mobile — the long-stay, actually-based-in-Japan option
Everything above is data-only and foreign-run. Sakura Mobile is different: a Japan-based provider with travel eSIMs running up to 90 days, 5G, and in-country support in English. One caveat worth getting right: the short-term travel eSIMs (90 days and under) are data-only — a real Japanese number with voice and SMS comes through their longer-term voice+data plans, not the travel eSIM. It costs more than the global players, but if you’re here for a full quarter and want someone who actually answers when something breaks, that premium buys peace of mind the others can’t match.
Pros: Up to 90-day validity; 5G; local English support; built for long stays; voice/SMS available on the longer-term voice+data plans. Cons: Premium pricing; travel eSIM is data-only (voice needs the monthly plan); overkill for short stays. Who it’s for: Working-holiday folks and long-stay residents who want local support and a longer window — and, via the monthly voice+data plans, a real Japanese number.
Which one should you actually buy?
Let me match the pick to the situation, because “it depends” is a cop-out.
- You move around Japan and can’t risk a dead work day → Ubigi. Best network, 5G, uncapped tethering. The default.
- You want the same reliability but cheaper → Saily or Nomad. Saily if you like the app and security angle; Nomad if you’re optimising per-GB on big packs.
- You mostly work on your phone / off Wi-Fi and stream a lot → Holafly. Just don’t count on the hotspot.
- It’s your first eSIM and you want zero friction → Airalo. Accept 4G, gain simplicity.
- You’re constantly navigating new cities → Jetpac as a smart secondary.
- You’re here 3 months and want local support (plus a real number via the monthly plan) → Sakura Mobile.
In my experience, most working nomads are best served by Ubigi as the primary and a cheap Airalo or Nomad pack as a backup — because the one thing worse than a slow eSIM is a single point of failure on the day rent is due and a client is waiting.
The bottom line
For a digital nomad or long-stay visitor in Japan in 2026, the winner isn’t the one with the biggest “unlimited” banner — it’s the one that keeps your laptop online in a small town at 9 a.m. on a Monday. That’s Ubigi, with Saily and Nomad as strong value alternatives, Holafly for phone-heavy streamers, Airalo for first-timers, Jetpac for perks, and Sakura Mobile for long stays that want local support and a longer runway.
Whichever you choose, buy and install it before you land so you’re online the moment you clear immigration, and screenshot your plan details — you’ll thank yourself when you’re troubleshooting on airport Wi-Fi.
Ready to sort your connectivity? Our top all-round pick is Ubigi for its network and 5G; if you’re watching the budget, Saily and Nomad are strong value. Not sure an eSIM is right for you? See our overview, how to get internet in Japan. Confirm the current price and plan terms on each provider’s page before you buy — the numbers move, and we’d rather you paid today’s price than our estimate.