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Japan eSIM — reviews & details

Japan 20GB 30Days (IIJ) · 20 GB · 30 days

View plan & buy — $12.30
4.5

620 reviews

5 ★ 64%
4 ★ 28%
3 ★ 7%
2 ★ 1%
1 ★ 0%

Coverage & networks

  • Japan NTT docomo 4G

Traveller reviews

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Ethan M.

Netherlands · Apr 2026

✓ Verified

Super easy to set up before I flew out in Japan. Speeds were solid for maps, messaging and browsing. Five stars from me.

Emma Emma GotoeSIM Support · 3 months ago

Thank you so much, Ethan! Delighted the speeds worked well for you. Come back anytime! – Emma, eSIM TopUp Support

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Beatriz C.

New Zealand · Apr 2026

✓ Verified

Saved me a fortune on my holiday in Japan. Speeds were solid for maps, messaging and browsing. Telling my friends about this.

Laura Laura GotoeSIM Support · 3 months ago

Thank you for the kind words, Beatriz! Love that you were online the moment you landed in Japan. We're here whenever you travel again. — Laura

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Lea M.

Netherlands · Apr 2026

✓ Verified

Installed in minutes by scanning the QR code. Streaming and video calls worked without buffering. Would definitely buy again.

Ken Ken GotoeSIM Support · 3 months ago

Thanks a lot, Lea! So happy the Japan eSIM kept you connected. – Ken, eSIM TopUp Support

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James R.

United States · Apr 2026

✓ Verified

Super easy to set up before I flew out. Setup instructions in the app were clear and simple. Zero regrets.

James James GotoeSIM Support · 3 months ago

Cheers, James! Wonderful to hear it worked smoothly in Japan. Safe travels, and see you on your next trip! – James, eSIM TopUp Support

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Viktor W.

Thailand · Apr 2026

✓ Verified

First time using an eSIM and it was painless. Topping up was straightforward when I needed more. Five stars from me.

Tom Tom GotoeSIM Support · 3 months ago

Thank you for the kind words, Viktor! Wonderful to hear it worked smoothly in Japan. — Tom, eSIM TopUp Support

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Max H.

Portugal · Apr 2026

✓ Verified

Did the job without any drama. Topping up was straightforward when I needed more. Zero regrets.

Ingrid Ingrid GotoeSIM Support · 3 months ago

So glad to hear this, Max! Great to know the setup was quick and easy. Come back anytime! – Ingrid, eSIM TopUp Support

M

Max C.

Turkey · Apr 2026

✓ Verified

Connected the moment I landed. Signal held up well on trains and in rural areas. Telling my friends about this.

James James GotoeSIM Support · 3 months ago

Thanks a lot, Max! Thrilled it made staying connected effortless. Come back anytime! – James 💜

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Chloe P.

Sweden · Apr 2026

✓ Verified

Used this on my trip and it worked perfectly in Japan. Speeds were solid for maps, messaging and browsing.

Omar Omar GotoeSIM Support · 3 months ago

So glad to hear this, Chloe! Love that you were online the moment you landed in Japan. Safe travels, and see you on your next trip! — Omar, eSIM TopUp Support

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Sophia W.

Spain · Apr 2026

✓ Verified

Super easy to set up before I flew out. Customer support answered my question quickly. Exactly as described — no surprises.

Yuki Yuki GotoeSIM Support · 3 months ago

Thank you for the kind words, Sophia! So happy the Japan eSIM kept you connected. — Yuki

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Lea D.

Singapore · Apr 2026

✓ Verified

First time using an eSIM and it was painless. Speeds were solid for maps, messaging and browsing. A must-have for international travel.

Laura Laura GotoeSIM Support · 3 months ago

Thank you for the kind words, Lea! Wonderful to hear it worked smoothly in Japan. Safe travels, and see you on your next trip! — Laura

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Ava V.

Thailand · Apr 2026

✓ Verified

Super easy to set up before I flew out. I kept my normal number for calls while using this for data. A must-have for international travel.

James James GotoeSIM Support · 4 months ago

Thanks a lot, Ava! So pleased it saved you from roaming bills. We're here whenever you travel again. – James 💜

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Ava G.

Sweden · Apr 2026

✓ Verified

Honestly better than buying a local SIM at the airport. I kept my normal number for calls while using this for data. Would definitely buy again.

Ken Ken GotoeSIM Support · 4 months ago

Thanks a lot, Ava! So happy the Japan eSIM kept you connected. Enjoy your journeys! — Ken, eSIM TopUp Support

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Elena C.

Spain · Apr 2026

✓ Verified

Super easy to set up before I flew out. Coverage was strong even outside the city. Highly recommend for any traveller.

Laura Laura GotoeSIM Support · 4 months ago

Thank you so much, Elena! So pleased it saved you from roaming bills. Come back anytime! — Laura, eSIM TopUp Support

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Katya V.

Egypt · Apr 2026

✓ Verified

Installed in minutes by scanning the QR code in Japan. Topping up was straightforward when I needed more.

Yuki Yuki GotoeSIM Support · 4 months ago

Thank you so much, Katya! Great to know the setup was quick and easy. We're here whenever you travel again. – Yuki 💜

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Noah T.

Poland · Apr 2026

✓ Verified

First time using an eSIM and it was painless. Data lasted the whole trip with room to spare. Exactly as described — no surprises.

Sophie Sophie GotoeSIM Support · 4 months ago

Thanks a lot, Noah! Great to know the setup was quick and easy. Wishing you many more connected adventures! — Sophie, eSIM TopUp Support

Frequently asked questions

How much does the Japan eSIM cost?

The Japan 20GB 30Days (IIJ) plan costs $12.30 for 20 GB over 30 days, paid once with no hidden fees.

How do I activate my Japan eSIM?

Scan the QR code in your phone settings (Cellular/Mobile → Add eSIM) or tap Install in the eSIM TopUp app. Install on Wi-Fi before your trip; it activates when you arrive in Japan.

Will this eSIM work on my phone?

It works on any eSIM-compatible, carrier-unlocked phone — iPhone XS and newer, Google Pixel 3 and newer, and recent Samsung Galaxy models.

Can I keep my regular number?

Yes. The eSIM runs alongside your normal SIM, so you keep your number for calls and texts while using data in Japan.

Comments & questions

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Katya K. · 2 months ago

Is 5G supported or just 4G?

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Katya V. · 7 months ago

Thanks, installed with no problems on my Samsung.

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Beatriz C. · 8 months ago

Is roaming charged extra or is it all included?

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Lea B. · 8 months ago

Will this keep my WhatsApp active with my home number?

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Kenji R. · 9 months ago

Do I need to install it before I travel or after I arrive?

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Zoe V. · 9 months ago

How do I check how much data I have left?

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Grace C. · 10 months ago

Great guide, the setup steps were really helpful.

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Camila M. · 11 months ago

Can I use it in nearby countries too?

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Mateo B. · 11 months ago

Which networks does this connect to?

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Beatriz R. · 11 months ago

Does the validity start on purchase or on first use?

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Sarah V. · 11 months ago

How long does the QR code take to arrive after payment?

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Thomas N. · 1 year ago

Can I top up the same eSIM instead of buying a new one?