Best ESIM For Japan [2025 GUIDE]

Planning a trip to Japan is always exciting. Whether it's your first time wandering Tokyo's neon-lit streets or you're slowing down to appreciate spring blossoms in Kyoto's temples and gardens, the country never fails to amaze.

But Japan can feel overwhelming at times. The train system, while incredibly efficient, can be confusing when you're hopping between Shinkansen lines. Menus in cosy izakayas are rarely in English. Even something as simple as paying at a convenience store can be tricky without reliable internet.

This is me saying that, despite living in Japan for 9 months, and visiting it one too many times for a holiday.

That's why having a strong connection is more than just a nice-to-have here; it's the key to a smoother trip. I learned this firsthand when I spent time living in the Japanese countryside, where patchy service turned everyday tasks into small adventures.

Enter eSIMs. Forget about queuing for a physical SIM at the airport or trying to decipher local mobile plans. With an eSIM, you buy online before your flight, scan a QR code, and you're connected the second your plane lands. No paperwork, no shops, no wasted time.

In this guide, I'll walk you through the best eSIMs for Japan. I'll break down prices, coverage, and which ones suit different travel styles, plus step-by-step instructions to get set up.

So whether you're chasing cherry blossoms in spring, soaking in an onsen, or heading off-grid in the Alps, this is everything you need to stay connected in Japan.

P.S. Keep reading to snag some sweet exclusive discount codes for BATW readers!

Read also:

Best eSIM for Malaysia
Best eSIM for New Zealand
Best eSIM for Australia
Best eSIM for Vietnam

My Japan eSIM Recommendation

Before we start to break down, let me share a quick story — because honestly, choosing the right eSIM in Japan can completely change your trip.

On my first visit to Tokyo, I thought I'd rely on free WiFi.

Big mistake.

I found myself in Shinjuku Station (the busiest train station in the world), exhausting myself on email registration to connect to WiFi, staring at signs in Japanese, with no working map app, and trains leaving every minute. I ended up circling for almost 40 minutes before finally finding the right platform.

Since then, I never travel to Japan without an eSIM. Whether I'm navigating Kyoto's bus system, streaming Spotify on the Shinkansen, or buying ramen at a cashless vending machine, being online is non-negotiable.

If you're looking for the short answer: Truely is my go-to eSIM for Japan.

What I liked most is how easy it is to set up. I bought the eSIM online, scanned the QR code on arrival, and it connected instantly.

Truely runs on top Japanese networks, giving access to 4G/5G coverage in major cities like Tokyo and Osaka, as well as in smaller towns like Hakone and Nara.

The data plans are flexible, which is a big plus. For example, the 30-day unlimited plan gives up to 5 GB/ day of high-speed data, which is enough for navigation, messaging, and even some video calls.

I also liked that Truely doesn't throttle my connection abruptly, the speeds remain consistent until the data runs out.

One thing to keep in mind: Truely eSIMs are data-only, so you won't get a local phone number
and cannot make or receive calls or SMS. For me, this wasn't an issue since I rely on WhatsApp and iMessage, but it's something to note if you need local calls.

It's not the cheapest option, but the convenience of instant setup, reliable coverage, and predictable data usage makes it worth it—especially for longer trips where staying connected is crucial.

In this guide, we'll compare Truely to other eSIM providers in Japan, so you can decide which one best fits your trip, budget, and data needs.

Summary Of The Best eSIMs In Japan

eSIM	Data Coverage	Coverage Duration	Price Range
MicroEsim	1 GB, 3 GB, 5 GB, 10 GB, 20 GB, Unlimited	1 to 60 days	USD 0.85 – USD 60
Orbit Mobile	1 GB, 3 GB, 5 GB, 10 GB, 20 GB, Unlimited	7 to 30 days	USD 0.60 – USD 45
Jetpac	1GB, 3GB, 5GB, 10GB, 15GB, 20GB, 30GB, 40GB	4 days, 30 days	USD 4 – USD 58
Airalo	1 GB, 2 GB, 3 GB, 5 GB, 10 GB, 20 GB	7 days, 15 days, 30 days	USD 5 – USD 40
Truely	Unlimited	Customisable	USD 5.52 – USD 75
Holafly	Unlimited	Flexible durations	Starting from USD 7
GigSky	1 GB, 3 GB, 5 GB, 10 GB, Unlimited	1 day, 7 days, 14 days, 15 days, 21 days, 30 days	USD 7 – USD 50
Zensim	5 GB, 10 GB, 20 GB, Unlimited (2GB/day)	10 to 30 days	USD 13 – USD 70

Best eSIM for a 7-day trip in Japan: Orbit Mobile

Best eSIM for a 30-day trip in Japan: Truely

We break it down below.

Best eSIM For 7 Days In Japan

Planning a one-week trip to Japan? From neon-lit nights in Shinjuku to hiking in Kanazawan, staying connected is key — and trust me, not all eSIM plans are created equal.

eSIM	Plan Duration	Price	Data	Price per GB/ per day
Orbit Mobile	7 days	USD 12	5 GB	USD 2.4/GB
Gigsky	7 days	USD 14	5 GB	USD 2.8/ GB
MicroEsim	7 days	USD 15	Unlimited	USD 3/ day
Holafly	7 days	USD 27.3	Unlimited	USD 3.9/ GB
Jetpac	7 days	USD 20	5 GB	USD 4/GB
Airalo	7 days	USD 20	5 GB	USD 4/ GB
Zensim	7 days	USD 21	5 GB	USD 4.2/ day
Truely	7 days	USD 29.89	Unlimited	USD 4.27/ day

Some look great on paper until you realise how quickly the data runs out, or how much you're really paying per GB.

Here's how the main 7-day options in Japan stack up:

I tried Orbit Mobile (my pick!) for a quick Tokyo stay. While they offer a fixed plan of 5GB for 7 days, their 7-day plan is USD 12 (USD 2.40/day), which feels reasonable for the flexibility. Note that they only offer hotspot capped at 500 MB/ day, so it's not suitable if you're the type to use your laptop the whole day. The setup was simple, and the fact that it's reusable across multiple countries is a big plus for multi-stop trips.

GigSky – Surprisingly budget-friendly in Japan. For USD 14, you get 5 GB over 7 days, making it just USD 2.8/GB. Setup requires downloading the app, registering, and selecting the Japan plan, but once activated, it runs smoothly. It handled Google Maps, LINE, and social media uploads smoothly during my Osaka trip.

The 7-day MicroEsim plan is USD 12 for 5 GB, scaling up to larger data bundles. I found the price attractive, but speeds were inconsistent in some areas like the outskirts of Kyoto. Great for super-light users or as a backup eSIM, but not ideal if you rely on heavy mapping or streaming.

Holafly – If you don't want to think twice about your data usage while navigating Tokyo's metro or streaming shows on a Shinkansen ride, Holafly is a safe bet. For USD 27.30, you get unlimited data for 7 days. At around USD 3.90/day, it's not cheap, but the convenience of never hitting a cap is priceless.

Just note: you have 500mb capped for hotspot, so if you need to tether a laptop all day, this might not be ideal.

Jetpac – Here's the tradeoff: Jetpac doesn't have a true 7-day plan. Their best fit is the 30-day 5 GB plan for USD 20, which breaks down to about USD 4/GB. If you're fine paying for more days than you'll use, it's a decent mid-range option with reliable coverage.

Airalo – I've used Airalo across Asia, and Japan is no exception. Their 7-day 5 GB pack costs USD 20, which breaks down to USD 4/GB. It's perfect for moderate users — think maps, translation apps, Instagram posts, and light browsing. Coverage is solid even outside major cities, including smaller towns in Hokkaido and Okinawa.

ZenSim's most worth 7-day pack is USD 21 for 5 GB. I used it in Tokyo and felt the coverage was solid, though slightly slower in peak hours. It's convenient for short trips, especially if you prefer a simple setup with decent speed and moderate data usage.

Truely – I found it reliable in cities like Tokyo and Osaka, and even in smaller towns like Takayama, I never felt completely cut off. Setup was seamless at the airport, and the flexibility to reuse the eSIM for other countries is perfect for multi-destination trips. Not the most budget-friendly for a short 7-day trip like this one, but it's worth considering if you're spending a longer time in Japan with their Unlimited plan.

Best eSIM For 30 Days In Japan

If you're spending a month in Japan — whether you're working remotely from a café in Tokyo, soaking in hot springs in Hakone, or, like me, going to Mount Tateyama to build a snowman, you'll need an eSIM plan that balances affordability, coverage, and enough data to keep you connected for the whole trip.

Here's how the main eSIMs compare in Japan for a 30-day plan:

eSIM	Plan Duration	Price	Data	Price per GB/ per day
MicroEsim	30 days	USD 17.3	20 GB	USD 0.58/ GB
Orbit Mobile	30 days	USD 24	20 GB	USD 0.8/GB
Airalo	30 days	USD 25	20 GB	USD 1.25/ GB
Zensim	30 days	USD 35	20 GB	USD 1.75/ day
Jetpac	30 days	USD 58	20 GB	USD 2.9/GB
Gigsky	30 days	USD 50	10 GB	USD 5/ GB
Holafly	30 days	USD 69	Unlimited	USD 2.3/ day
Truely	30 days	USD 75	Unlimited	USD 2.5/ day

Zensim (my pick)– Zensim's 30-day plans start at USD 15 for 5 GB. Now, this is the cheapest option amongst the rest of the brands for 30 days. I used the 20 GB for USD 35 in central Tokyo, Kyoto, and around Lake Biwa.

They also offer daily with 2 GB/day high-speed. Speeds were reliable in urban areas, but the app sometimes delayed activation by a few minutes at remote locations. Its main advantage is multi-country compatibility (more on that below) and moderate pricing, making it an ideal eSIM for travellers covering multiple countries.

MicroEsim – MicroEsim is highly flexible with daily or total data options — for 30 days, 20 GB is around USD 17.30. I used it primarily for casual browsing in Tokyo and Osaka. It's excellent if you're budget-conscious, as it comes down to USD 0.58/GB, but heavy usage (streaming or multiple device tethering) may strain its network reliability.

Orbit Mobile's 30-day plan with 20 GB for USD 24 offers excellent value at just USD 1.20/ GB. During my trip, the 20GB lasted well for moderate use, handling Google Maps, messaging apps, and social media uploads with minimal slowdowns.

Speeds remained solid in most urban areas, though some rural spots may see occasional dips. Overall, this plan is ideal if you want a reliable, budget-friendly data option for a full month.

Airalo – Airalo is a reliable middle ground. For USD 25, you get 20 GB over 30 days (USD 2.60/GB), which is one of the cheapest. Setup is instant with their app, and coverage is strong across Japan. If you're a moderate user who mostly needs maps, messaging, and occasional browsing, Airalo is a safe and budget-friendly option.

Jetpac – Jetpac's 20 GB, 30-day plan costs USD 58 (USD 2.90/GB) and is perfect if you need extra data plus perks. While travelling between Kyoto and the Kiso Valley, I had enough data to navigate offline maps, upload photos, and check bus schedules.

The extra benefits, like a free VPN and airport lounge discounts, made it convenient when transferring in Narita and Kansai airports. Activation is simple via the app, and it only starts counting when your phone connects to T-Mobile's network in Japan.

GigSky – GigSky doesn't have 20 GB plan, instead, it offers 10 GB for USD 50 (USD 5/GB). I used it while exploring Osaka and rural Nara for work calls and light streaming.

Its Fair Use Policy limits high-speed data to roughly 2.5 GB per day, after which speeds drop but remain usable — perfect for planning multi-hour train rides or downloading maps ahead of time. The app-based setup is slightly less intuitive than Airalo, but once connected, it handled WhatsApp, Google Maps, and Instagram flawlessly.

Holafly – If you never want to worry about running out of data, Holafly is the most convenient option. Their unlimited 30-day plan costs USD 69, which works out to around USD 2.30/day. You can roam freely across Japan — from Tokyo's neon districts to rural rice fields — and stay online without limits. The only catch? Hotspotting is capped at 500mb, so it's not very ideal if you need to tether your laptop all day.

Truely – Truely offers a 30-day truly (see the pun there?) unlimited plan for about USD 75, with 5 GB per day high-speed before throttling. I used it while working remotely in Tokyo and Kyoto.

The standout feature is its reusability – you can use the same eSIM in multiple countries if Japan is one of the many stops on your journey. Coverage is strong in urban areas and decent in smaller towns like Hakone, though high-speed limits might affect heavy streamers. Setup is straightforward, and the eSIM is entirely data-only.

Best Unlimited eSIM Plan For Japan

Best unlimited eSIM for Japan: Truely

	1 day	30 days
MicroEsim	USD 2.24/day	USD 2.41/day
Truely	USD 5.52/day	USD 2.5/day
Holafly	USD 5.90/day	USD 2.30/day
Zensim	–	USD 2.33/day

1. MicroEsim – Budget-Friendly Option

MicroEsim provides unlimited data plans starting at USD 2.24 per day. The setup is user-friendly, and coverage is decent. However, speeds are capped after 1GB of high-speed data usage, which might not be sufficient for users with higher data demands.

2. Truely eSIM – My Top Pick

Truely offers unlimited data with full-speed access up to 5 GB per day, after which speeds reduce to 512 Kbps. Plans range from USD 5.52 for 1 day to USD 75 for 30 days, allowing flexibility based on your travel duration.

Setup is seamless – purchase online, scan the QR code, and you're connected instantly. Coverage is solid thanks to partnerships with over 700 networks globally, so whether you're in Tokyo or rural Hokkaido, you're covered.

Here's why I'm willing to pay a little extra: Truely removes the hotspot limitation, meaning your unlimited data isn't just for your phone—it can power your laptop or other devices too!

3. Holafly eSIM – Most Reliable

Holafly provides unlimited data at 5G/4G speeds across Japan. Prices start at USD 5.90 per day, with multi-day plans available. The setup is straightforward, and coverage is excellent.

Do note that there's a 500MB daily hotspot limit, which might be restrictive if you see yourself working on a second device in areas with no free WiFis.

While it's a solid choice, the hotspot limitation place it slightly below Truely for me.

4. ZenSim eSIM – Great For Using Multiple Devices

ZenSim offers a solid option if you're seeking reliable connectivity in Japan. Their unlimited plan provides 3GB of high-speed data per day, after which speeds are reduced.

The plan is priced at USD 70 USD for 30 days (USD2.33 per day), which is competitive in the market.
One of ZenSim's standout features is its auto-activation upon arrival in Japan, eliminating the need for manual setup after a long flight.

Additionally, tethering is supported, allowing you to share your connection with other devices, which is beneficial if you need to stay connected across multiple gadgets.

eSIM I Don't Recommend For Japan

While there are plenty of solid eSIM providers, GigSky isn't my top pick for Japan, and here's why:

Price isn't great for what you get – GigSky's 30-day plan gives you 10GB for USD 50, which works out to USD 5 per GB. Compared to other providers like Orbit Mobile or Truely, the cost is significantly higher for less data.

Coverage and speed are okay, but not outstanding – GigSky performs well in major cities like Tokyo and Osaka, handling Google Maps, messaging, and social media uploads reliably.

However, I noticed slower speeds in some semi-rural areas, meaning if you're planning to explore smaller towns or countryside spots, your connection could be less dependable.

That said, GigSky isn't a bad eSIM.

For light users who mostly stay in cities and don't mind paying a premium, it can work. But compared to better-value options like Truely or Orbit Mobile, it doesn't really stand out, and I personally wouldn't choose it for a full month in Japan.

Detailed Comparisons Of eSIMs For Japan

MicroEsim for Japan

When I tested MicroEsim in Japan, it surprised me with how flexible and affordable it was.

Unlike providers that only sell fixed 5GB or 10GB packs, MicroEsim lets you pick exactly how
much you need per day — from light 500MB plans to true unlimited. That flexibility meant I didn't have to overpay, and I could match my plan to my actual travel style.

To put it into perspective, 3GB a day was more than enough to keep me online all the time. I could stream Spotify on shinkansen rides between Tokyo and Osaka, pull up Google Maps when I got lost cycling through Kyoto's side streets, and translate menus on the spot at tiny ramen shops in Takayama.

I even uploaded full-resolution photos straight from my hikes in Kamikōchi without worrying about hitting a wall.

Coverage was consistently strong. MicroEsim runs on SoftBank and KDDI's 5G networks, which are 2 of the biggest in Japan. That gave me solid reception not just in major cities, but also in smaller towns and more rural areas. Even in the mountains of Gifu, FaceTime calls went through without a hitch.

The one caveat is the Fair Usage Policy (FUP). After you've used up your daily high-speed allowance, which is customisable from 1 GB to unlimited, speeds drop to 128kbps. That's usable for WhatsApp or checking email, but forget about streaming or navigation at that speed. The upside is that data refreshes every morning, so you wake up each day with a clean slate of high-speed internet.

Here's a quick look at Microesim's Japan plans:

• 1 day – from USD 0.85
• 3 days – from USD 1.39
• 5 days – from USD 1.30
• 7 days – from USD 2.67
• 10 days – from USD 3.76
• 15 days – from USD 2.95
• 30 days – from USD 3.04
• Unlimited (5Mbps) – from USD 68.62
• 60 days – from USD 58.32

Order a MicroEsim for Japan here

Orbit Mobile eSIM for Japan

Orbit Mobile is one of the cheapest options if you're travelling to Japan and want flexible data without overpaying.

What sets it apart is that you only need to install the eSIM once, and you can keep reusing it for future trips. No juggling multiple QR codes every time you switch countries.

For my trip, the 20GB / 30-day plan for just USD 24 is ideal, which can comfortably last through 4 weeks of exploring. Between navigating Tokyo's Shibuya crossing with Google Maps, streaming Spotify while riding the Shinkansen to Kyoto, and uploading batches of photos from Nara Park, I won't worry about running out.

The best part? I could tether my laptop in cafes and coworking spaces without issues, thanks to their reliable hotspot support.

Here's a quick look at Orbit Mobile's 30-day Japan data plans:

• 1 GB = USD 3 (USD 3/GB)
• 3 GB = USD 6.00 (USD 2.00/GB)
• 5 GB = USD 7.00 (USD 1.40/GB)
• 10 GB = USD 8.00 (USD 0.80/GB)
• 20 GB = USD 24.00 (USD 1.20/GB)

Beyond price, Orbit Mobile connects to multiple Japanese networks with 5G support, so whether you're wandering through Harajuku, cycling along Lake Biwa, or catching a train out to Kanazawa, the signal stays solid.

And if something doesn't work? Their money-back guarantee has you covered — a rare reassurance among budget eSIM providers. If the eSIM fails to activate or the connection is unreliable, you can get a full refund.

Orbit Mobile doesn't offer unlimited daily refreshes like Holafly or MicroEsim (after all, it's not an unlimited plan), but if you have a rough idea of your data needs, it's one of the cheapest, most flexible ways to stay connected in Japan.

Order an Orbit Mobile eSIM for Japan here

Zensim eSIM for Japan

Zensim is a straightforward, no-frills option for travellers who want flexible data plans with the convenience of managing everything through the ZenSim app.

They cover over 200 countries, but what stood out to me for Japan was the variety of plans — from smaller 5 GB packs to larger 20 GB options, and even “Unlimited” daily plans that give you 2 GB of high-speed data per day.

If you're spending around a month in Japan, the 10 GB / 30-day plan for USD 21 would be enough for your needs: navigating Tokyo's sprawling subway system, video-calling home while strolling through Kyoto's Gion district, and posting photo dumps from Nara's bowing deer.

What I like most is the tethering support — you can easily hotspot your laptop if you're planning to do some work outside of your accommodation, without worrying about connection drops.

Here's a quick look at ZenSim's Japan plans:

• 5 GB = USD 13.00 (10 days, USD 2.60/GB)
• 5 GB = USD 15.00 (30 days, USD 3.00/GB)
• 10 GB = USD 20.00 (10 days, USD 2.00/GB)
• 10 GB = USD 21.00 (30 days, USD 2.10/GB)
• 20 GB = USD 32.00 (10 days, USD 1.60/GB)
• 20 GB = USD 35.00 (30 days, USD 1.75/GB)
• Unlimited STANDARD = USD 32.00 (10 days, USD 3.2/day)
• Unlimited STANDARD = USD 70.00 (30 days,USD 2.33/day)

A couple of things to note: ZenSim's “Unlimited” isn't truly unlimited. After using 2GB in a day, your speeds may be throttled. For casual users, that's fine, but if you're streaming or uploading big files, the 20GB fixed plans are a better deal.

All plans are data-only, so you don't get a local number or SMS. I managed perfectly with WhatsApp, which most locals use anyway.

ZenSim might not have the ultra-cheap pricing of Orbit Mobile or the daily reset convenience of MicroEsim, but if you value solid coverage, tethering support, and app-based management, it's a reliable middle-ground choice for Japan.

Order a Zensim eSIM for Japan here

Truely eSIM for Japan

Truely is hands-down my top pick for Japan if you want an eSIM that just works without constant worry. Their plans range from as little as USD 5.52 for a single day to about USD 74.93 for 30 days unlimited plan with 5GB/ day, which is actually perfect for anyone like me who works while travelling.

What I really love about Truely is how flexible it is. You can install the eSIM once and reuse it in other countries if Japan is just one stop on your itinerary—super handy for multi-country trips.

A few things I noticed from personal use:

• Fair Use Policy: The “unlimited” data isn't truly endless—it's 5 GB/day at full speed before throttling. For most travellers, that's plenty. I could stream music on the Shinkansen, navigate Tokyo, and even hop on a quick video call without a hitch.
• Coverage: Worked flawlessly in cities like Tokyo, Osaka, and Kyoto. In more rural spots like Takayama, speeds slowed a bit, but I could still load maps, check emails, and message easily.
• Setup: Super straightforward. I activated it at Haneda Airport and was online within minutes. No fuss, no hunting for a SIM shop.
• Data-only: No local phone number or SMS, so I relied on WhatsApp and iMessage—but honestly, that's all I needed.

For me, Truely strikes the perfect balance between reliability and flexibility. It's not the absolute cheapest option, but the peace of mind knowing you'll have solid, fast data wherever you go? Totally worth it.

If you're heavy on maps, streaming, or video calls, Truely will save you a lot of headaches compared to other providers.

Order a Truely eSIM for Japan here

Holafly eSIM for Japan

Holafly was the first eSIM I tried in Japan – and honestly, it set the bar high. It's one of the few providers that offer truly unlimited data, which was a lifesaver when I was commuting in Tokyo, navigating Kyoto's backstreets, or taking weekend trips out to the Japanese Alps.

Most eSIM providers sell you 1 GB, 3 GB, or 5 GB packs, which can vanish in no time when you're using maps, translations, or streaming. Unlike other providers where you're stuck counting gigabytes, Holafly gives true peace of mind: stream, translate, or navigate freely without worrying about running out mid-trip.

Holafly keeps things simple: one eSIM, unlimited data, and you just pick how long you want it for. It runs on Japan's big 3 networks (SoftBank, NTT Docomo, and AU by KDDI), so you're essentially getting the same coverage as locals.

Here's a quick look at their unlimited data plans for Japan:

• 5 days = USD 21 (USD 4.20/day)
• 7 days = USD 30 (USD 4.28/day)
• 10 days = USD 37 (USD 3.70/day)
• 20 days = USD 62 (USD 3.10/day)
• 30 days = USD 144 (USD 4.80/day)

Seamless setup & instant activation – I bought the plan before my flight, scanned the QR code, and I was online as soon as I landed in Narita. No queuing at SIM counters, no fumbling with tiny cards.

Unlimited data = total peace of mind – I didn't have to ration my data even once. From navigating the Tokyo Metro with Google Maps, to streaming Spotify on long shinkansen rides, to FaceTiming family from a quiet village in Gifu — it all worked without a hitch.

Coverage beyond the cities – This was the real test for me. While living in rural Japan, I noticed my Holafly eSIM still latched onto strong signals in smaller towns and even in the mountains. Whether it was uploading countryside photos or checking bus timetables in places with zero English signage, it never left me stranded.

24/7 support – I didn't end up using it, but just knowing help was there if something went wrong made me feel reassured.

The downside: Now, about that “unlimited” promise. Holafly does have a Fair Use Policy, meaning your speeds could be throttled if you burn through a massive amount of data in one go (think: hours of HD streaming or giant downloads).

But in my experience — maps, translations, social media, video calls — I never hit a slowdown.

One caveat: Holafly is data-only. It doesn't come with a local Japanese number, so you can't make standard calls or send SMS. Personally, I used LINE (which everyone in Japan uses), WhatsApp, and FaceTime without issue, so it didn't feel like a limitation.

Order a Holafly eSIM for Japan here

Airalo eSIM for Japan

If you're looking for a wallet-friendly option while hopping between Tokyo, Osaka, and Kyoto, Airalo is hard to beat. I've used Airalo multiple times during my travels, and I love how straightforward it is: buy the plan, scan the QR code, and you're connected within minutes.

Instead of unlimited data, Airalo offers flexible packages depending on how much you think you'll use. That makes it ideal if you're a lighter user or just need connectivity for maps, translations, and messaging while exploring Japan's cities.

Here's a breakdown of Airalo's Japan plans:

• 1 GB / 1 day – Free (USD 0/GB)
• 1 GB / 7 days – USD 4.50 (USD 4.50/GB)
• 2 GB / 15 days – USD 6.50 (USD 3.25/GB)
• 3 GB / 30 days – USD 8.50 (USD 2.83/GB)
• 5 GB / 30 days – USD 11.50 (USD 2.30/GB)
• 10 GB / 30 days – USD 18.00 (USD 1.80/GB)
• 20 GB / 30 days – USD 26.00 (USD 1.30/GB)

Affordable and flexible – The biggest draw of Airalo is how little you need to spend to stay connected. For just USD 11.50, you can get 5 GB that lasts a whole week, perfect if you're only using it for essentials. Even their larger plans (10 GB for USD 18 or 20 GB for USD 26) are priced competitively compared to most other providers.

Easy to set up – Everything runs through the Airalo app. Once you download it, purchasing and installing the eSIM takes a couple of taps. It's a huge convenience when you've just landed and don't want to deal with confusing airport counters.

Solid urban coverage – In my experience, Airalo connects well in Japan's major cities, where coverage is rarely an issue. Google Maps, LINE, WhatsApp, and even short video uploads worked smoothly across Tokyo and Osaka.

A few trade-offs – Airalo doesn't come with unlimited data, so you'll need to keep an eye on usage if you're a heavy streamer or do a lot of video calls. Also, it's data-only, meaning no local number for calls or texts (though you can just get by with WhatsApp or LINE).

Extra perks – If it's your first time using Airalo, you can often score a discount (usually around 15% off). They also run giveaways occasionally, which makes an already affordable option even better.

GET 15% OFF Airalo plans for new users with code: BATW15

GET 10% OFF for existing users with code: BATW10

Overall, Airalo is the go-to eSIM if you're budget-conscious, sticking mostly to Japan's cities, and don't need the peace of mind that comes with unlimited data.

Order an Airalo eSIM for Japan here

GigSky eSIM for Japan

GigSky was another provider I tried in Japan, and I was pleasantly surprised by how flexible their plans are.

What stood out most was the ease of setup. I activated the eSIM directly through the GigSky app within minutes, and it worked right away without any fiddling with APN settings — perfect if you're landing in Japan and want instant connectivity.

Unlike providers that only sell you fixed bundles like 5 GB or 10 GB, GigSky lets you choose from small daily packs all the way up to full unlimited data plans. That makes it a good fit whether you're just in Tokyo for a weekend or planning a month-long stay exploring all corners of the country.

GigSky runs on NTT Docomo's and KDDI's networks, which means you're getting reliable 4G LTE and 5G coverage in most urban areas — Tokyo, Osaka, Kyoto, Fukuoka — and even decent reception once you leave the cities.

Here's a quick look at their plans for Japan:

• 1 GB / 1 day – USD 7 (USD 7.00/GB)
• 3 GB / 7 days – USD 13.99 (USD 4.66/GB)
• 5 GB / 15 days – USD 24.99 (USD 5.00/GB)
• 10 GB / 30 days – USD 39.99 (USD 4.00/GB)
• Unlimited / 30 days = USD 52.49 (USD 1.75/ day)

Simple setup & quick connection – I downloaded the GigSky app, purchased the plan, and was connected within minutes. No paperwork, no store visits — just a couple of taps and I was online.

Affordable mid-range options – The 3 GB and 5 GB packs hit a sweet spot if you're not a heavy user. I used 5 GB over a 2-week trip that covered Tokyo, Hakone, and Nara, and it was more than enough for maps, social apps, and a few video calls.

Unlimited plan with tethering – One big advantage GigSky has over Holafly is tethering. If you're someone who likes to hotspot your laptop or tablet, GigSky allows it. Their unlimited plan is also cheaper upfront than Holafly's, though it comes with a Fair Use Policy — speeds may drop after around 2–3 GB per day of heavy use.

Coverage in rural areas – In smaller towns and countryside regions, coverage was good but not flawless. While Holafly felt slightly more reliable in the mountains, GigSky held up well in mid-sized towns like Kanazawa and Takayama.

Customer support – Available through the app, and I actually had to use it once when my plan didn't activate right away. The response was quick and helpful, and I was online within minutes.

Overall, GigSky is a solid balance between flexibility, affordability, and ease of use. If you don't need unlimited high-speed data every second of your trip and you value hotspot sharing, GigSky can be a very smart choice.

Order a GigSky eSIM for Japan here

Jetpac eSIM for Japan

Jetpac is one of those providers that really surprised me with the extras it throws in. On top of offering affordable data plans, you also get perks like a free VPN, discounts at airport lounges, and even complimentary lounge access if your flight gets delayed. Those add-ons can make a big difference if you're a frequent traveller hopping around Asia.

Here's a look at their Japan pricing:

• 1 GB / 4 days – USD 1 (USD 1.00/GB)
• 3 GB / 7 days – USD 11 (USD 3.67/GB)
• 5 GB / 30 days – USD 15–18 (USD 3.00–3.60/GB)
• 10 GB / 30 days – USD 18–23 (USD 1.80–2.30/GB)
• 20 GB / 30 days – USD 28–34 (USD 1.40–1.70/GB)
• 40 GB / 30 days – USD 60–65 (USD 1.50–1.63/GB)

What I like about Jetpac is the flexibility. If you're in Japan for just a few days, that USD 1 mini plan can cover basic needs like maps and messaging. And if you're staying longer, the 20 GB and 40 GB monthly plans give you plenty of data at a reasonable price point.

In terms of coverage, Jetpac uses Japan's major networks, so you'll have no trouble in cities like Tokyo, Osaka, and Kyoto. Speeds were perfectly fine for social media, Google Maps, and even video calls.

Another bonus is how simple Jetpac's app is when managing your plan. You can check your balance in real time, top up instantly, and even switch between different regional packs if Japan is just one stop on your trip.

That said, in more rural areas — like when I was exploring countryside villages outside of Nagoya — I did notice occasional drops in signal strength compared to Holafly. It wasn't unusable, but it's something to keep in mind if your trip leans more towards off-the-beaten-path travel.

Another plus is that tethering works, so you can hotspot your laptop or tablet if needed. Combined with the built-in VPN, this makes Jetpac a handy option for digital nomads who care about online privacy.

The downside? While the perks are nice, their customer support can feel a bit less polished compared to providers like Airalo or Holafly. And if you're venturing deep into the countryside, coverage won't be as bulletproof as with Holafly.

Still, if you want solid value plus travel-friendly extras, Jetpac is a pretty appealing choice in Japan.

Order a Jetpac eSIM for Japan here

Choosing The Best eSIM For Japan

What Is The Cheapest eSIM For Japan?

The cheapest eSIM really depends on how much data you need and how long you're staying.

• For a 1 GB plan: Orbit Mobile is the lowest at just USD 3.00 (USD 3/GB).
• For a 5 GB plan: Orbit Mobile again comes in cheapest at USD 7.00 (USD 1.40/GB).
• For a 20 GB plan: MicroEsim is unbeatable at USD 17.30 (around USD 0.58/GB/day) for 30 days.

If you're only in Japan for a quick trip and need light data (maps, messaging, translations), Orbit Mobile's tiny plans are the most budget-friendly. But if you need more data for longer stays—streaming, video calls, or working remotely – MicroEsim's 20 GB plan is the best value hands down.

Most Reliable eSIM For Remote Areas In Japan

If you're planning to explore beyond Tokyo, Osaka, and Kyoto, think the Japanese Alps, Hokkaido, or smaller countryside towns – Truely tends to be the most reliable option I've used.

It provides unlimited data across Japan's main networks: SoftBank, AU, and NTT Docomo, which means you're less likely to lose signal when you're off the beaten path.

During my trips to rural Nagano and Hokkaido, I could navigate, upload photos, and stay connected without worrying about throttling or dropped coverage. Other eSIMs, like MicroEsim or GigSky, may work well in cities but can be less consistent in remote areas.

Setup is straightforward – scan the QR code and you're online in minutes—and the flexible plans make it easy to adjust for different lengths of stay.

For anyone who values reliable coverage and unlimited data while exploring both urban and remote areas, Truely is a practical choice.

How To Get an eSIM For Japan

Getting an eSIM for Japan is surprisingly simple, and once you've done it once, you'll never go back to queuing at airport SIM counters. Here's how it works:

1. Pick the right provider for your trip – If you're sticking to Tokyo, Osaka, and Kyoto with light browsing needs, Airalo or Jetpac are great. If you want truly unlimited data, Holafly is the way to go.

2. Select your plan – Decide how much data you'll realistically need. Small plans (1–3 GB) are fine for maps and messaging, while 10–20 GB plans work better for heavier use like streaming, social media, or tethering. If you don't want to think about limits at all, go unlimited.

3. Purchase online & get your QR instantly – Once you've chosen your provider, you'll get a QR code emailed to you right after purchase. No waiting, no shops, no physical SIM card.

4. Install & activate when you land – I usually install the eSIM before boarding, then switch it on as soon as the plane lands in Narita or Haneda. Within minutes, you're connected, ready to grab your train ticket, navigate Tokyo's subway, or message your Airbnb host.

It really is a plug-and-play solution – giving you one less thing to stress about on arrival.

FAQs About eSIMs in Japan