Does it work in rural Japan / Hokkaido / Okinawa?

Yes. KDDI covers all 47 prefectures of Japan including Hokkaido, Okinawa, Tohoku, and Kyushu. 5G is concentrated in cities and major towns. Rural areas, deep mountain regions, and smaller Okinawan islands fall back to 4G LTE, which stays fast enough for maps and messaging.

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Quick ways to confirm eSIM support

Via Settings (iPhone)

Open Settings → General → About.
Look for Available SIM / Digital SIM or an EID field.
If visible, your iPhone supports eSIM.

All iPhone XR/XS and newer models support eSIM.

Via Settings (Android)

Open Settings → Network & Internet / Connections.
Tap SIMs / SIM Manager / eSIMs.
If you see an option to Add eSIM, your phone supports eSIM.

Menu names vary by brand (Samsung, Google Pixel, etc.).

Dial Code

Dial *#06# on your phone.
Check the numbers shown. If you see an EID, eSIM is supported.

EID = eSIM ID. Presence of EID generally confirms eSIM capability.

Heads‑up: Some carrier‑locked or region‑specific variants may disable eSIM even if the global model supports it. Always confirm in Settings before purchasing.

Brand‑by‑brand quick notes

Apple: iPhone XR/XS and newer support eSIM. Dual eSIM on many recent models.

Google Pixel: Pixel 3 and newer generally support eSIM (some early/region variants limited).

Samsung Galaxy: S20 and newer, Note20, and Z series support eSIM on most variants. Check SIM Manager.

Others: Recent models from Honor, Huawei, Motorola, OnePlus, Xiaomi may support eSIM depending on region and firmware.

For corporate/MDM or carrier‑locked devices, administrators or carriers may disable eSIM.

FAQs

Will my eSIM work worldwide?

eTravelSIM works across multiple networks in each covered country. However, your phone must be factory‑unlocked and eSIM‑capable. Coverage and 5G/4G availability vary by network.

Dual SIM: can I keep my home number active?

Yes—most modern devices support Dual SIM (eSIM + physical SIM). You can keep calls/SMS on your home SIM and use eTravelSIM for data while abroad. Configure default lines in Settings.

I can’t see eSIM options in Settings

Update to the latest OS, restart, and check again. If still missing, your device/region/carrier may have eSIM disabled. Please contact your carrier or device maker.