📱 Updated April 2026
Japan eSIM Data Plans Compared (2026):
Which Is Right for You?
Not all Japan eSIM plans are equal. Here's a clear comparison of every major data plan — so you can pick the right one before you fly.
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Best 1 GB Plan
eSIM Go ($3.50 / 7 days)
Best 3 GB Plan
Airalo ($9.50 / 30 days)
Best Unlimited
Holafly ($19 / 5 days)
Best with voice calls: Sakura Mobile ($28 / 30 days) — the only eSIM provider on this list that offers an optional Japanese phone number and English-language customer support.
Full Data Plan Comparison
| Provider | Plan | Data | Duration | Price | Network |
|---|---|---|---|---|---|
| eSIM Go | Japan S | 1 GB | 7 days | $3.50 | Docomo |
| eSIM Go | Japan M | 5 GB | 15 days | $8.00 | Docomo |
| eSIM Go | Japan L | 10 GB | 30 days | $14.00 | Docomo |
| Airalo | Moshi S | 1 GB | 7 days | $4.50 | Docomo |
| Airalo | Moshi M | 3 GB | 30 days | $9.50 | Docomo |
| Airalo | Moshi L | 10 GB | 30 days | $18.00 | Docomo |
| Holafly | Unlimited | Unlimited | 5 days | $19.00 | SoftBank |
| Holafly | Unlimited | Unlimited | 10 days | $27.00 | SoftBank |
| Holafly | Unlimited | Unlimited | 30 days | $49.00 | SoftBank |
| Sakura Mobile | Standard | 7 GB | 30 days | $28.00 | Docomo |
Prices shown in USD. All plans are data-only except Sakura Mobile, which offers an optional voice add-on. Prices verified April 2026 — check provider websites for current rates.
How Much Data Do You Need?
| Activity | Estimated Per Day |
|---|---|
| Google Maps navigation | ~50 MB |
| Social media browsing | ~150 MB |
| Streaming video (SD) | ~500 MB |
| Video calls | ~300 MB |
| Light use total | ~200 MB |
| Heavy use total | ~1 GB |
Most travellers to Japan fall into the “light use” category — maps, messaging, and occasional Instagram posts. At ~200 MB/day, a 3 GB plan covers 15 days comfortably. If you stream video on trains or make regular FaceTime calls, budget for 500 MB–1 GB per day.
Best Plan by Trip Length
1–3 days → eSIM Go 1 GB ($3.50)
The cheapest plan available. More than enough data for a short city visit using navigation and messaging.
4–7 days → eSIM Go 1 GB or Airalo 1 GB
Either 1 GB plan covers a week of moderate use. eSIM Go is slightly cheaper; Airalo has a more established app.
1–2 weeks → Airalo 3 GB ($9.50)
The best-value plan for a standard Japan holiday. 3 GB comfortably covers maps, messaging, and social media for 14 days.
2–4 weeks → Holafly Unlimited or eSIM Go 10 GB
Heavy users and those travelling for 3–4 weeks should consider unlimited (Holafly) or a large data plan (eSIM Go 10 GB at $14).
1 month+ → Sakura Mobile ($28)
For long stays, Sakura Mobile offers Docomo coverage, optional voice calls, and English-language customer support — worth the premium.
Best Plan by Usage Type
Light user
Mostly maps and messaging. No video streaming. 1–2 GB is plenty for a standard 2-week trip.
Our pick: eSIM Go Japan S (1 GB, $3.50)
Get this plan →Average user
Maps, social media, occasional photo uploads to the cloud. Standard tourist behaviour over 1–2 weeks.
Our pick: Airalo Moshi M (3 GB, $9.50)
Get this plan →Heavy user
Streaming video, frequent video calls, uploading content, or travelling for 3+ weeks.
Our pick: Holafly Unlimited
Get this plan →Need voice calls
Requires a real Japanese phone number for reservations, SIM-dependent apps, or calling hotels.
Our pick: Sakura Mobile Standard ($28)
Get this plan →Price Per GB Comparison
| Provider | Plan | Price / GB | Notes |
|---|---|---|---|
| eSIM Go | Japan L (10 GB) | $1.40/GB | Best value per GB |
| eSIM Go | Japan M (5 GB) | $1.60/GB | |
| Airalo | Moshi L (10 GB) | $1.80/GB | |
| Airalo | Moshi M (3 GB) | $3.17/GB | |
| Sakura Mobile | Standard (7 GB) | $4.00/GB | Includes voice option |
| Holafly | Unlimited | N/A | Flat rate per day |
Price per GB favours larger plans — but only buy what you'll actually use. A 1 GB plan that lasts your trip is better value than a 10 GB plan you only use 2 GB of.