Back to Connectivity Hub⚡ Compare Plans 🏁 Step-by-Step
Best Japan eSIMs
Direct plan comparisons. Filter by size to get real-time price matches.
✅ Updated for 2026 Carriers
Select Target Data Limit
Best Deal• Runs on NTT Docomo
Ubigi Plan 30 Days
Urban Standard• Runs on SoftBank
Airalo Plan 30 Days
Shopping Checklist
Verify Device Unlock
Ensure your phone is network unlocked. Carrier-locked phones cannot register foreign eSIM data cards.
Compare Packages & Buy
Select your daily usage cap and order the eSIM online. Confirmations arrive via email with configuration details within 2 minutes.
Save Activation Details
Take a screenshot of the QR code and copy the manual activation codes in your travel notes just in case.
FAQs
➕ Can I purchase multiple eSIM plans?
Yes. You can install multiple eSIM profiles on your phone and switch active lines in your cellular network configurations. Only 1 or 2 eSIMs can run active cellular data routing simultaneously depending on your device specs.
➕ Which network offers the best speeds?
SoftBank provides fast urban speeds in cities like Tokyo and Osaka. NTT Docomo offers slightly lower top speeds but has superior coverage in rural, mountainous, and train transit corridors.
➕ Can I use my eSIM for tethering / personal hotspot?
Yes, both Ubigi and Airalo support personal hotspot tethering on compatible devices. Keep in mind that sharing your connection with multiple devices will consume your data pool much faster.
➕ Can I top up my data plan if I run out?
Yes. You can purchase top-ups directly in the Airalo or Ubigi app without needing to scan a new QR code. The top-up data will activate automatically once your current pool is exhausted or expires.
➕ Do these plans support 5G speeds?
Yes, both Ubigi (on Docomo) and Airalo (on SoftBank) support 5G speeds in major urban centers where coverage is available, and fall back to 4G LTE in rural areas.