Prepaid SIM Card

Japan Wireless eSIM

13,850+

Reviews

#1 Trusted

Japan Wireless Brand

13,850+

Reviews

#1 Trusted

Japan Wireless Brand

eSIM Supported Phones list Install and activate your eSIM

Before you buy your eSIM

Setting up your eSIM

Using your eSIM

Troubleshooting

Using your eSIM(13)

Discover our top rated eSIM collection for reliable connectivity in Japan.

How fast is the internet speed of Japan Wireless eSIM?

Our eSIMs can go up to 40Mbps (download).

How is the validity period for eSIM calculated?

The validity period starts once your eSIM is activated regardless of your location. 1 day is calculated as 24 hours.

If I run out of data what will happen?

5G Unlimited (KDDI): Stay connected under Fair Usage Policy — no daily 3GB cutoff. 4G Unlimited (NTT DOCOMO): After 3GB/day at high speed, speed reduces to 256 kbps until midnight JST reset. Fixed Data plans: Once total data is used, high-speed access ends (5G fixed throttles; 4G fixed suspends connection).

Should I use unlimited plan or data plan?

If you plan to consume a large number of internet in a short amount of time. e.g. Streaming, Video calling etc. We recommend buying a 30GB plan or a 50GB plan instead.

Before you buy your eSIM

Can I order your esim before my trip starts?
Can I use an eSIM and a physical sim card at the same time?
Can I use the same eSIM across multiple devices?
Can I switch back from eSIM to physical sim card?
Can you use whatsAPP or other messaging apps with eSIM in Japan?
Does an eSIM change your phone number?
Does eSIM drain your battery?
Does eSIM work without internet?
How does an eSIM work?
Is eSIM better than sim card?
Is it better to use pocket wifi or eSIM in Japan?
What are the disadvantages of eSIM?
What is the time frame for activating my eSIM?
What payment methods do you accept?
Will I get a new phone number?
Will I receive a package for my eSIM?
What is an eSIM?

Compatibility

Are all Androids of the newest model compatible with Japan Wireless eSIM?
Are all iPhones of the newest model compatible with Japan Wireless eSIM?
How do I know if my phone is eSIM compatible?
Which phones are compatible with Japan Wireless eSIMs?
Can I use Japan Wireless 5G eSIM on a 4G-only device?

Setting up your eSIM

Can I use hotspot to share data with other devices?
How do I activate an eSIM?
I'm facing connection issues, what should I do?
My Japan Wireless eSIM doesn't work on my Android
My Japan Wireless eSIM doesn't work on my iPhone
My Japan Wireless eSIM doesn't work
When can I activate my eSIM?
Japan Wireless eSIM IOS & Android Set up Guide

Using your eSIM

Can I top up my eSIM plan?
Can I use my eSIM outside of Japan?
How do I check the remaining balance of my eSIM data?
How fast is the internet speed of Japan Wireless eSIM?
How is the validity period for eSIM calculated?
If I run out of data what will happen?
Should I use unlimited plan or data plan?
When do you reset my data plan?
Will my internet speed by reduced for unlimited plan?

Troubleshooting

What should I do if my QR code is not working?
What should I do if I deleted or lost the QR code for my eSIM?
Why won't my eSIM work?

Refund Policy

Can I cancel my order?
Can I get a refund if my eSIM connection is slow?
Can I get a refund if my phone is not compatible with Japan Wireless eSIM?
How can I get a refund?

Promotions

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Referral

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Using your eSIM | Japan Wireless eSIM FAQ | Japan Wireless