The best eSIMs for Japan in 2025 based on expert reviews and testing are:
- Saily: Best overall eSIM for Japan with affordable plans starting at $3.99 for 1GB, strong security features, easy setup, and 5G support. Offers plans from 1GB to 20GB and monthly subscriptions with added perks like VPN and ad blocker.
- Airalo: Popular and user-friendly with data plans and also options with calls and SMS through global plans. Offers 1GB to 20GB data options and good coverage via SoftBank and KDDI networks.
- Ubigi: Known for fast speeds, reliable coverage through NTT Docomo, and flexible plans ranging from small data to unlimited monthly and yearly plans.
- Holafly: Offers unlimited data eSIMs with data sharing features, but no local phone number.
- Nomad and MobiMatter: Good for flexible data sizing and regional coverage including Japan, China, and South Korea.
Among these, Saily stands out for overall value, security, and ease of use. If you need calling and texting included, Airalo’s global Discover+ plans are a good choice. For top speed and reliable network, Ubigi is strong. If you want a Japanese phone number included, Mobal offers an eSIM with a Japanese number and Docomo coverage.
In summary:
Provider| Best For| Key Features| Price Range| Network Partners
---|---|---|---|---
Saily| Overall best, security, value| VPN, ad blocker, multiple plans| From
$3.99 (1GB)| UK 1GLOBAL, NTT Docomo
Airalo| SMS & calls with global coverage| Data + call/SMS via global plan| £0
- £20.50 (1-20GB)| SoftBank, KDDI
Ubigi| Speed and coverage| Fast 4G/5G, flexible plans| £3 - £66 (1GB+)| NTT Docomo
Holafly| Unlimited data users| Data sharing, unlimited plans| £3.79 - £116| KDDI
Mobal| Japanese phone number included| Data + SMS + local number| ¥990/month| Docomo
Saily is the best overall choice for most travelers to Japan, balancing cost, data, security, and ease of use.
If you want more tailored advice based on specific data needs or trip length, further details can be provided.