encryptSIM destination guide
🇯🇵 Japan eSIM
Mobile data for people living in Japan, visiting, working remotely, or keeping a private backup connection ready. Install before you enter Japan or after you arrive. No encryptSIM KYC, no ID upload, and no physical SIM swap.
Supported operators in Japan
encryptSIM can use the listed network operators in Japan. Where multiple operators are available, the value is broader coverage and better speed potential than being locked to one local mobile subscription.
Japan destination coverage
Based on public national population coverage data from 2024, all operators combined.
Japan mobile speed context
Public Q1 2026 mobile-user average. This is not an encryptSIM customer-speed claim. encryptSIM does not add hidden speed throttling. Because encryptSIM can access the supported network operators listed above, it has a better chance of using the strongest available signal than a normal single-network subscription. Real-world speed still depends on device support, radio type, signal, congestion, and plan conditions.
Popular city speed context
| City | Download | Upload | Latency | Tests |
|---|---|---|---|---|
| Tokyo | 115.76 Mbps | 18.40 Mbps | 47.41 ms | 52,387 |
| ÅŒsaka | 126.01 Mbps | 19.18 Mbps | 54.98 ms | 13,782 |
| Yokohama | 101.02 Mbps | 17.33 Mbps | 45.16 ms | 26,372 |
| Nagoya | 108.14 Mbps | 16.82 Mbps | 52.14 ms | 10,669 |
| Fukuoka | 107.65 Mbps | 15.48 Mbps | 62.44 ms | 3,657 |
Japan SIM registration rules
Local SIM signup in Japan requires SIM-card registration: Capture and Store, data retention 3 years (from termination of contract), biometric check In progress, and law-enforcement access Yes. encryptSIM avoids opening a local operator account for this data line: no encryptSIM KYC, no ID upload, and no physical SIM swap.
| Data basis | Country-law dataset row |
|---|---|
| Registration required | Yes |
| Signup data handling | Capture and Store |
| Data privacy framework | Yes |
| Biometric check | In progress |
| SIM-card limit per person | No limit |
| Law-enforcement access | Yes |
| Penalties | Provider - Varying fines and potentially imprisonment Subscriber - deactivation |
| Data stored for | 3 years (from termination of contract) |
| IMEI database | No |
- No encryptSIM KYC, ID, or document upload.
- No local operator account needed for this eSIM data line.
- Install digitally and keep your regular SIM available for calls or SMS.
Local SIM vs encryptSIM
Choose local, regional, or Global mobile data
Use a local Japan eSIM for one destination, a regional eSIM for nearby destinations, or the Global eSIM as a year-long backup data layer.
Popular eSIM phones
Popular phone brands in Japan
Public May 2026 brand share context helps prioritize the eSIM phones users are most likely to check before buying mobile data for Japan.
Popular eSIM phones in Japan
Use the latest encryptSIM devices dataset to populate model cards for the strongest brands in this market.
Apple iPhone 17e
Google Pixel 10a
Samsung Galaxy A37
Check your eSIM device
encryptSIM works on eSIM-compatible phones, tablets, and devices. Check the current device list before buying if you are unsure.
Japan eSIM FAQ
Does encryptSIM work in Japan?
Yes. The current coverage data lists 2 supported network operators for Japan: KDDI, SoftBank Corp..
Do I need a local mobile account?
No. encryptSIM is a separate eSIM data product. You do not need to open a direct local operator account for this data line.
Can I install before arrival?
Yes. You can install the eSIM before entering Japan or after arrival, then turn it on when you need mobile data.
Are these encryptSIM speed numbers?
No. The speed section uses public area-level mobile speed context from Ookla Open Data. It is useful destination context, not encryptSIM-user or operator-specific speed.