If you are looking for the best eSIM for Japan, then you have come to the right place! In our big comparison, we have studied the installation, activation, network coverage, mobile networks and data plans, as well as their advantages and disadvantages.
Some providers only offer unlimited data and others only offer limited tariffs. Some eSIMs are cheaper, but do not have as good network coverage. With the help of our article you are sure to find the right eSIM for you.
Which are the best eSIMs for Japan?
Top 5 eSIM providers Japan
- Saily – Cheap data plans
- Airalo – Best provider overall
- Holafly – Best eSIM for unlimited data
- Jetpac – Additional add-ons
- Ubigi – Large selection of data plans
eSIM Japan | These are the best
Saily
- Data volume: 10 GB
- Validity: 30 days
Calls and SMS: Not included - Network: Use of the 5 G/4 G/LTE network
- Prices: 19.99 USD
5% Discount with Code: TRAVELASTRONAUT
The company Saily, which was only founded in 2024, offers a smaller selection of tariffs, which range from 1 to 20 GB. An unlimited tariff is not available and there is no package of data and calls.
If the card has been installed correctly, it will be activated automatically upon arrival.
Data plans:
- 1 GB: Valid for 7 days, price 3.99 USD
- 3 GB: Valid for 30 days, price 7.99 USD
- 5 GB: Valid for 30 days, price 10.99 USD
- 10 GB: Valid for 30 days, price 17.99 USD
- 20 GB: Valid for 30 days, price USD 24.99
- Unlimited: From 34.99 USD for 10 days
Network: KDDI
Network coverage: Very Good
Pros and Cons
Pros
✔ ️ Low-cost plans – Competitive prices for various data packages
✔ ️ Easy activation – Quick installation via QR code
✔ ️ No contract required – No long-term commitment required
Cons
❌ Data rates only – No SMS or phone calls possible
❌ No pay-as-you-go – Only fixed data packages can be booked
❌ Customer service limited – No 24/7 live support available
Airalo - eSIM Japan Comparison
- Data volume: 10 GB
- Validity: 30 days
- Calls and SMS: Not included
- Network: Use of the 5 G/4 G/LTE network
- Price: EUR 17.50
Airalo offers 7 different plans for Japan, one of which is a free welcome eSIM (500 MB) for those who want to test Airalo first. Otherwise, there are rates from 1 GB to 20 GB, an unlimited rate is unfortunately not available, a rate of a combination of data and calls is only available on the global rates (Discover+). Verification is not necessary at Airalo for Japan. What is very positive is that Airalo uses two networks, so you can easily switch to another network if you have problems.
Airalo’s customer service is particularly good and is repeatedly praised by customers.
The following tariffs are offered by Airalo:
- 500 MB: Valid for 3 days, price €0.00 (Free Welcome eSIM)
- 1 GB: Valid for 7 days, price €4.50 / £3.50
- 2 GB: Valid for 15 days, price €6.50 / £5.00
- 3 GB: Valid for 30 days, price €8.50 / £6.50
- 5 GB: Valid for 30 days, price €11.00 / £8.50
- 10 GB: Valid for 30 days, price €17.50 / £14.00
- 20 GB: Valid for 30 days, price €25.00 / £19.50 /$*
*Prices in USD are the same amounts like in EUR
Network: Airalo uses the networks of the mobile phone providers Softbank and KDDI
Pros and Cons of Airalo eSIMs for Japan
Pros
✔ ️ Wide network coverage – Uses reliable Japanese network operators for stable connection
✔ ️ Easy installation – activation via QR code, no physical SIM card required
✔ ️ No KYC – No verification necessary
✔ ️ Cheap prices – Competitive rates compared to local SIM cards
✔ ️ Networks – Uses two renowned mobile networks
Cons
❌ Data plans only – No call or SMS feature included (VoIP apps required)
❌ No unlimited data options – Maximum 20GB available
❌ No 5 G – Only 4 G/LTE speed available
Holafly
- Data Volume: Unlimited Data
- Validity: 7 days
- Calls and SMS: Not included
- Network: Use of the 5 G/4 G/LTE network
- Hotspot function: Sharing up to 500 MB of data per day possible
- Price: 26,90 EUR
5% Discount with Code: TRAVELASTRONAUT
For Japan, as for all other countries, Holafly “only” offers unlimited tariffs, which are particularly suitable for frequent users. The price depends on the validity of the data tariff. The longer the tariff applies, the cheaper the daily price will be. You choose plans between 1 and 90 days. Here are a few examples:
Holafly Data plans Japan:
- 1 day: Unlimited dates for €5.90 / £3.79 / $3.90
- 5 days: Unlimited dates for EUR 18.90 (3,78€ /day) / £17.00 / $19.50
- 7 days: Unlimited data for €26.90 (€3.84 /day) / £24.00 / $27.30
- 15 days: Unlimited data for €46.90 (€3.13 /day) / £41.00 / $50.90
- 30 days: Unlimited data for €68.90 (€2.30 /day) / £60.00 / $74.90
Network: Holafly uses KDDI’s mobile network
Network coverage: The mobile internet connection is particularly fast and stable in Tokyo, Kyoto, Hiroshima, Kanto, Nagasaki, Osaka but also in many other areas.
Pros and Cons Holafly
Pros
✔ ️ Unlimited data – Ideal for frequent users as Holafly offers unlimited data plans.
✔ ️ Easy activation – Quick installation via QR code, without a physical SIM card.
✔ ️ No roaming fees – Saves high roaming costs compared to traditional providers.
✔ ️ 24/7 customer service – support via live chat and email around the clock.
✔ ️ Compatibility with common devices – Works with most current eSIM-enabled smartphones.
Cons
❌ No local phone number – Holafly only offers data plans, no option for calls or text messages.
❌ Fair use policy for “unlimited” data – After high consumption, the speed can be reduced.
❌ Limited network selection only – No direct access to all Japanese carriers, possibly weaker coverage in remote areas.
❌ More expensive than other providers – Prices are higher compared to other eSIM providers for Japan.
❌ Hotspot function restricted – In some tariffs, sharing mobile data is not permitted.
Jetpac - eSIM Japan
- 10GB of data
- Valid in Japan
- No calls or text messages
- Valid for 30 days
- Uses the 5 G/4 G/LTE network
- Price: EUR 14.50
Jetpac offers a total of nine different eSIM tariffs for Japan.
Jetpac has a very good selection with nine data tariffs. Unfortunately, there is no unlimited data plan and a rate of data and calls is not available either, yet Jetpac won the Excellence Award on Tripzilla in 2023 and has a very good rating on Trustpilot with 4.7 out of 5.
The following data plans are available for Japan on the Jetpac website:
- 1 GB: Valid for 4 days, price 1 EUR (instead of 4 EUR, only for new users)
- 3 GB: Valid for 7 days, price 6 EUR
- 5 GB: Valid for 30 days, price 9 EUR
- 10GB: Valid for 30 days, price 14.5 EUR (instead of 17.5 EUR, 17% discount)
- 15GB: Valid for 30 days, price 16.5 EUR (instead of 21 EUR, 21% discount)
- 20 GB: Valid for 30 days, price 22 EUR
- 30GB: Valid for 30 days, price 28EUR (instead of 34.5EUR, 19% discount)
- 40 GB: Valid for 30 days, price 44 EUR
- 50GB: Valid for 10 days, price 28.5EUR (instead of 52.5EUR, 46% discount)
Network: Jetpac uses KDDI’s mobile network, this is a stable network with a fast 5 G connection.
Network coverage: Very good
Pros and Cons
Pros of Jetpac eSIMs for Japan
✔ ️ Quick Activation – eSIM can be installed and used within minutes of purchase
✔ ️ Good network coverage – Using the major Japanese network operators for a stable connection
✔ ️ Flexible tariff options – Different data packages for different usage needs
✔ ️ Add-on Packages – Additional Services for Airport Lounge Access
❌ Cons
❌ No unlimited data pack – No real “unlimited” option available
❌ Data rates only – No calls or SMS possible, mobile data only connection
Ubigi
Here’s an example:
- Data volume: 10 GB
- Validity: 30 days
- Calls and SMS: Not included
Network: Use of the 5 G/4 G/LTE network
Prices: EUR 18.00
Ubigi is an excellent provider for Japan. There are a number of packages on the website to choose from 1 GB to unlimited and there are also monthly and annual tariffs. Ubigi uses two networks, which means you can easily switch to another one if you have problems.
Data plans:
- 1 GB: Valid for 3 days, Price: €3.50 (Expo 2025 Japan) / £3.00
- 1 GB: Valid for 30 days, Price: €4 / £3.50
- 3 GB: Valid for 15 days, Price: €8 / £7
- 5 GB: Valid for 15 days, Price: €12 / £10 (Expo 2025 Japan)
- 10 GB: Valid for 7 days, Price: €14 / £12
- 10 GB: Valid for 30 days, Price: €18 / £15
Unlimited dates: Valid for 7 days, price: €26
- 20 GB: Valid for 30 days, Price: 30 € (Expo 2025 Japan) / £23
- 25 GB: Valid for 30 days, Price: €35 / £29
- 50 GB: Valid for 30 days, Price: 64 €* / £54
*Same amounts in USD
Network: Ubigi uses the mobile networks of KDDI and NTT DoCoMo
Network coverage: Very good
Ubigi Pros and Cons
Pros
✔ ️ Good network coverage – Uses the reliable networks KDDI and NTT DoCoMo in Japan
✔ ️ Flexible rates – Various data packages for short and long stays from 1 GB to unlimited
✔ ️ Supports 5 G – High speed with availability
✔ ️ Global use possible – tariffs available for several countries in Asia and worldwide
✔ ️ Roaming alternative – Significantly cheaper than traditional roaming
Cons
❌ Data plans only – No way to send or receive calls or SMS
❌ Limited customer service – No 24/7 live chat available
alosim
- Data volume: 10 GB
- Validity: 30 days
- Calls and SMS: Not included
- Network: Use of the 5 G/4 G/LTE network
Prices: 18.00 USD
alosim offers flexible rates. You can choose between 1 GB and unlimited tariffs. The positive thing is that no ID is required for customer verification.
Date packs for Japan:
- 1GB: Valid for 7 days, price $4.50
- 2GB: Valid for 15 days, price $6.50
- 3GB: Valid for 30 days, price $8.50 (Most popular)
- 5GB: Valid for 30 days, price $11.50
- 10GB: Valid for 30 days, price $18.00
- 20GB: Valid for 30 days, price $26.00 (Best Value)
- Unlimited: Valid for 10 days, price $35.00 (Unlimited Rate)
Network: alosim uses the mobile network au (KDDI)
Network coverage: Good
Pros and Cons alosim eSIMs Japan
Pros
✔ ️ Easy installation – Quick activation via QR code without physical SIM
✔ ️ Cheap rates – Affordable prices compared to other providers
✔ ️ Flexible data options – Various data packages for short and long term users
✔ ️ Hotspot usage allowed – Can be shared with other devices
✔ ️ No contract required – prepaid model with no long-term commitments
Cons
❌ Data tariffs only – No option for calls or SMS (VoIP required)
❌ Only uses one network – Is mimicked to a mobile network
❌ Limited Support – No around-the-clock live chat or phone calls
Airhub
Japan tariffs from Airhub
- 7GB data
- Calls or SMS: None
- Valid for 30 days
- Uses the 4 G/LTE-Net
- Price: 16.50 USD
Airhub offers some eSIM fares for Japan.
Airhub eSIMs for Japan are a convenient choice if you want to stay connected during your trip without the hassle of buying a physical SIM card.
Airhub has a large selection of different tariffs on the website. The data plans range from 1 GB to unlimited. There is no tariff for data and calls.
The coverage is strong not only in the big cities like Tokyo, Kyoto, Osaka, and Yokohama, but also in more rural and remote areas, making it a reliable option whether you’re exploring busy streets, visiting temples, or traveling through the countryside.
Airhub data packages:
1GB: Valid for 7 days, price $1.55
4GB: Valid for 30 days, price $5.00
7GB: Valid for 30 days, price $8.85
15GB: Valid for 30 days, price $14.65
25GB: Valid for 30 days, price $21.80
35GB: Valid for 30 days, price $36.88
Unlimited: Valid for 4 days, price $9.99
Unlimited: Valid for 7 days, price $14.25 (Most popular)
Unlimited: Valid for 10 days, price $19.15
Unlimited: Valid for 15 days, price $28.40 (Unlimited Rate)
Network: Airhub uses KDDI’s mobile network
Network coverage: Good
Pros and Cons
✅ Pros
- ✔️ Easy to install and activate
- ✔️ Wide choice of plans, including unlimited options
- ✔️ Good coverage in major cities like Tokyo and Kyoto
- ✔️ Reliable connection even in remote and rural areas
❌ Cons
- ❌ No SMS or voice calls included
- ❌ Uses only one local mobile network provider
eSIM Japan - Frequently Asked Questions (FAQ)
Why does an eSIM make sense for Japan?
It makes sense to get an eSIM for Japan because you are connected to the Internet immediately after arrival and you don’t have to look for a map in the country and change the physical map.
Which is the best mobile network in Japan?
Overall, SoftBank is the best provider, followed by au (KDDI) and Rakuten Mobile. NTT Docomo has the best 5 G coverage, closely followed by Softbank, au (KDDI) and Rakuten Mobile.
How is installation and activation done?
Installation is usually very easy by scanning a QR code. You will receive this after purchase. After scanning, your eSIM is installed. Activation occurs as soon as your phone connects to a local network for the first time.
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