Astaroam eSIM for Japan | Plans, Prices & Validity

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Astaroam

Japan eSIM 20GB 30 Days

Heavy Data only 5G Top-up Hotspot

Data

20GB

Validity

30 days

Network

KDDI/au

Price

$17.36 $17.36 $17.36

$0.87/GB $0.58/day

0% off applied

Data

20GB

Validity

30 days

Price

$17.36 $17.36 $17.36

$0.87/GB $0.58/day

0% off

Plan type: Data only
Network: KDDI/au
Speed: 5G
Internet breakout: Singapore
Top-up available
Hotspot supported

Astaroam

Japan eSIM 10GB 30 Days

Everyday Data only 5G Top-up Hotspot

Data

10GB

Validity

30 days

Network

KDDI/au

Price

$12.22 $12.22 $12.22

$1.22/GB $0.41/day

0% off applied

Data

10GB

Validity

30 days

Price

$12.22 $12.22 $12.22

$1.22/GB $0.41/day

0% off

Plan type: Data only
Network: KDDI/au
Speed: 5G
Internet breakout: Singapore
Top-up available
Hotspot supported

Astaroam

Japan eSIM 5GB 30 Days

Light Data only 5G Top-up Hotspot

Data

5GB

Validity

30 days

Network

KDDI/au

Price

$9.90 $9.90 $9.90

$1.98/GB $0.33/day

0% off applied

Data

5GB

Validity

30 days

Price

$9.90 $9.90 $9.90

$1.98/GB $0.33/day

0% off

Plan type: Data only
Network: KDDI/au
Speed: 5G
Internet breakout: Singapore
Top-up available
Hotspot supported

Astaroam

Japan eSIM 3GB 15 Days

Light Data only 5G Top-up Hotspot

Data

3GB

Validity

15 days

Network

KDDI/au

Price

$6.60 $6.60 $6.60

$2.20/GB $0.44/day

0% off applied

Data

3GB

Validity

15 days

Price

$6.60 $6.60 $6.60

$2.20/GB $0.44/day

0% off

Plan type: Data only
Network: KDDI/au
Speed: 5G
Internet breakout: Singapore
Top-up available
Hotspot supported

Astaroam

Japan eSIM 2GB/day 7 Days

Unlimited Data only Hotspot

Data

Unlimited

Validity

7 days

Fair use ?

2GB / day then 512kbps

Price

$21.96 $21.96 $21.96

$3.14/day

0% off applied

Data

Unlimited

Validity

7 days

Price

$21.96 $21.96 $21.96

$3.14/day

0% off

High-speed data: 2GB / day
Then unlimited at: 512kbps
Plan type: Data only
Internet breakout: Singapore
Hotspot supported

Astaroam

Japan eSIM 2GB/day 10 Days

Unlimited Data only Hotspot

Data

Unlimited

Validity

10 days

Fair use ?

2GB / day then 512kbps

Price

$28.41 $28.41 $28.41

$2.84/day

0% off applied

Data

Unlimited

Validity

10 days

Price

$28.41 $28.41 $28.41

$2.84/day

0% off

High-speed data: 2GB / day
Then unlimited at: 512kbps
Plan type: Data only
Internet breakout: Singapore
Hotspot supported

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Useful guides

How much travel data do you really need abroad? → Do you actually need calls and SMS on a travel eSIM? → What is an eSIM and how does it work? → eSIM vs roaming vs local SIM: how to stay connected abroad →

Staying connected in Japan

A quick look at what the eSIM plans for Japan in our index offer, plus a few practical essentials for your trip.

Networks the plans use

au by KDDI 3G / LTE / 4G / 5G IIJ LTE / 4G NTT DOCOMO LTE / 4G / 5G Rakuten 4G / 5G SoftBank LTE / 4G / 5G

Based on the plans currently listed for Japan in our index. Network details are provided by suppliers and may change.

Travel essentials

CurrencyJapanese yen (JPY)
Dialling code+81
Local timeJST (GMT+9)
Time difference
LanguageJapanese

Guides for visiting Japan

How much travel data do you really need abroad?

From Google Maps and WhatsApp to streaming, hotspotting and remote work, travel data usage varies far more tha...

Read guide →

Do you actually need calls and SMS on a travel eSIM?

Many travel eSIMs are data only, which often raises the same question for travellers before a trip: what happe...

Read guide →

What is an eSIM and how does it work?

eSIMs are becoming increasingly common for travel, but many people still are not entirely sure how they work....

Read guide →

eSIM vs roaming vs local SIM: how to stay connected abroad

Three ways to get online when you travel: switch on roaming, grab a local SIM on arrival or set up an eSIM bef...

Read guide →

Astaroam eSIM plans for Japan

Astaroam offers 6 eSIM plans for Japan, with data from 3GB up to 20GB, plus an unlimited data option. Prices range from £4.99 to £21.49. Validity runs from 7 to 30 days. All Astaroam plans for Japan are travel eSIMs, so you can install before you fly and activate on arrival, with no physical SIM and no roaming charges.

Provider Astaroam

Plans for Japan 6

From £4.99

Data 3GB to 20GB + unlimited

Validity 7 to 30 days

Compare every Astaroam plan for Japan by data, validity and price. Install your eSIM before you travel, then activate it when you arrive.

Astaroam Japan eSIM: common questions

Astaroam currently offers 6 plans for Japan, including plans from 3GB up to 20GB, plus an unlimited option. Prices start from £4.99.

The lowest priced Astaroam plan for Japan starts at £4.99. Larger data allowances and longer validity options cost more, so you can pick the plan that fits your trip.

Astaroam plans for Japan range from 7 to 30 days of validity, so you can match the plan to how long you are travelling. Validity usually begins when the eSIM first connects to a network, but check the individual plan details to be sure.

Yes, Astaroam offers at least one unlimited data plan for Japan. Unlimited plans may apply a fair use policy on high speed data, so it is worth checking the plan details.

After buying, you install the Astaroam eSIM on a compatible, network unlocked phone, usually by scanning a QR code or through an app. Install before you travel, then it activates when you arrive in Japan. No physical SIM is needed.