Sakura Mobile eSIM Review 2026
au 5G unlimited data, clear tethering limits, and straightforward JPY pricing for Japan travel. Here's the full breakdown.
Best for: Budget-conscious solo travelers and couples who want unlimited data on Japan's au 5G network at a competitive, transparently-taxed price. We compared Sakura Mobile's published pricing against Japan Wireless's — see the breakdown below. Japan-based company on au 5G.
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What We Verified
Facts checked directly against Sakura Mobile's official site and support documentation before publishing this review.
- Independent reviews on Trustpilot: 4.8/5 from 1,470 reviews (as of September 2026) — more independent reviews than Japan Wireless's Trustpilot total (4.6/5 from 784 reviews).
- Sakura Mobile's official Travel eSIM setup guide confirms the Unlimited/5G plan's usage period (day count) starts once the eSIM connects to a network in Japan — not when you install it. Some devices show an activation error if installed outside Japan, so Sakura Mobile recommends installing on arrival, or right before you leave, rather than days in advance.
- Separately, Sakura Mobile's official support content confirms two rules tied to the QR code itself: it must be installed within 48 hours of being issued, and by default the order becomes non-refundable the moment the QR code is issued/made visible — regardless of when you actually connect in Japan. The one exception: if you added the optional eSIM Compatibility Insurance (550 JPY) and the eSIM turns out incompatible with your device, Sakura Mobile's official policy offers a free Pocket Wi‑Fi replacement or a partial refund (price minus the insurance fee) after you submit evidence — this doesn't cover a general change of mind. Generate the QR code only when you're ready to install it.
- Sakura Mobile bills exclusively in JPY, with prices shown tax-exclusive plus a separate tax-included total. USD prices on this page are a reference conversion (per Sakura Mobile's official pricing page) and can shift slightly with the exchange rate and your card issuer.
- Tethering allowances (6GB / 13GB / 30GB for 7 / 14 / 30 days) match the figures published on Sakura Mobile's official eSIM page.
We have not purchased or used this eSIM ourselves — this section covers verifiable facts from Sakura Mobile's official site and support content, not first-hand experience with speed, coverage, or support quality.
Plans & Pricing
5G/4G Unlimited eSIM — KDDI (au) network, data-only, instant QR delivery.
- au 5G unlimited data
- Tethering up to 6GB
- Instant QR code delivery
- au 5G unlimited data
- Tethering up to 13GB
- Instant QR code delivery
- au 5G unlimited data
- Tethering up to 30GB
- Instant QR code delivery
Plans also available from 1 day up to 90 days. Prices above are tax-exclusive; tax-included figures apply Japan's 10% consumption tax, consistent with Sakura Mobile's own published tax-inclusive examples for other durations. Sakura Mobile bills in JPY only — USD is a reference conversion and may shift with the exchange rate and your card issuer. Prices last verified June 2026 — confirm the exact JPY total at checkout.
How It Works
Digital delivery — no physical SIM, no pickup needed.
Buy online from anywhere
Purchase on the Sakura Mobile website before your trip. Works from any country. You'll receive a QR code by email.
Install the eSIM profile
Go to your phone's eSIM settings and scan the QR code. Takes about 2 minutes. Two rules apply from the moment Sakura Mobile issues the QR code: you must install it within 48 hours, and by default the order becomes non-refundable as soon as the QR code is shown — so don't generate it until you're ready (the optional Compatibility Insurance covers device-incompatibility only, not a change of mind — see below). Some devices also show an activation error if installed outside Japan, so on arrival or right before departure is safest.
Connect when you land in Japan
Separately from the 48-hour install window above, your Unlimited/5G plan's paid day count only starts once the eSIM connects to a network in Japan — not when you install it, and not when the QR code is generated — per Sakura Mobile's official guidance. No airport counters, no waiting for a package.
Pros & Cons
Based on pricing, specs, and product details.
Pros
- Priced competitively against Japan Wireless (see comparison below)
- au 5G — strong nationwide coverage
- Tethering clearly specified per plan
- Plans up to 90 days
- Japan-based company
- Buy online before departure
- No contract, no monthly fee
Cons
- Requires eSIM-compatible phone
- Phone must be unlocked
- No Japanese phone number included
- Some devices show an activation error if installed before arriving in Japan
- By default non-refundable once QR code is issued (optional Compatibility Insurance covers device-incompatibility only), and must be installed within 48 hours
Sakura Mobile vs Japan Wireless eSIM
Same spec — 5G unlimited, data-only. Published pricing side-by-side in USD.
| Duration | Sakura Mobile (tax-excl.) | Sakura Mobile (tax-incl., 10% JCT) | Japan Wireless (as published) |
|---|---|---|---|
| 7 days | $32.74 | $36.01 | $35.35 |
| 14 days | $52.39 | $57.63 | $62.39 |
| 30 days | $82.64 | $90.90 | $83.19 |
Sakura Mobile pricing last confirmed June 2026 (tax-exclusive headline price; tax-included figure applies Japan's 10% consumption tax). Japan Wireless pricing confirmed August 2026 — Japan Wireless does not state whether its price is tax-inclusive, so we can't confirm both columns are on the same tax basis, and aren't naming a winner. Confirm the current total at checkout for both. On independent Trustpilot reviews, Sakura Mobile has more (4.8/5 from 1,470) than Japan Wireless (4.6/5 from 784). See Japan Wireless eSIM review →
Is It Right for You?
| Traveler type | Verdict | Reason |
|---|---|---|
| Solo traveler | Best choice | Competitively priced unlimited eSIM, instant setup |
| Couple | Great value | Good value per person, especially 14-day trips |
| Family / group of 3+ | Consider Wi‑Fi | One Pocket Wi‑Fi unit may be cheaper for the group |
| Long stay (31–90 days) | Good option | Plans available up to 90 days — rare among travel eSIMs |
| Need a Japanese number | Not suitable | Data-only. No voice number included |
| Phone doesn't support eSIM | Not suitable | Requires eSIM-compatible, unlocked phone |
FAQ
Can I buy this before I arrive in Japan?
Yes. You purchase online and receive a QR code by email. Scan and install the eSIM on your phone at home before your trip.
Does my phone support eSIM?
Most iPhones since iPhone XS and flagship Android phones released after 2020 (Samsung, Google Pixel, etc.) support eSIM. Check your phone settings or manufacturer specs to confirm. Your phone must also be unlocked.
What does tethering limit mean?
Tethering (hotspot) lets you share your phone's connection with other devices like a laptop or tablet. Sakura Mobile specifies the limit clearly: 6GB for 7 days, 13GB for 14 days, and 30GB for 30 days. Your phone data remains unlimited.
Is au 5G coverage good in Japan?
Yes. au (KDDI) is one of Japan's three major carriers with strong 5G coverage in cities, tourist areas, and along major transport routes. Coverage in very rural or mountainous areas may vary.
How does it compare to Japan Wireless eSIM?
Sakura Mobile's tax-exclusive price (last confirmed June 2026) is lower than Japan Wireless's published price (confirmed August 2026) for 7 and 14 days, and close to it for 30 days. But Japan Wireless doesn't state whether its price is tax-inclusive, so we can't confirm both are on the same tax basis — add ~10% Japanese consumption tax to Sakura Mobile's figure for a tax-included comparison, and check the final checkout total for your dates before booking. On independent Trustpilot reviews, Sakura Mobile has more reviews than Japan Wireless (4.8/5 from 1,470 vs. 4.6/5 from 784).
au 5G Unlimited eSIM for Japan
au 5G · From $32.74 tax-exclusive · Instant digital delivery · Up to 90 days
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