How to Set Up a Japan eSIM on Android (Pixel, Samsung & More)

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Android is where most eSIM trouble happens — not because it’s harder, but because support varies by model and region. Spend two minutes on the compatibility check first and the rest is easy.

Step 0 — Does your phone actually support eSIM?

Generally yes on:

• Google Pixel 3 and newer (Pixel 3 has regional exceptions)
• Samsung Galaxy S20 / Note 20 / Z Flip / Z Fold and newer — but some carrier-branded US models and most models sold in Korea/China/Hong Kong do not
• Recent flagships from Motorola, OnePlus, Xiaomi, OPPO, Sony — check your exact model

The quick test: open Settings → Network & internet → SIMs (Pixel) or Settings → Connections → SIM manager (Samsung). If you see “Add eSIM” or “Add mobile plan”, you’re good.

Also confirm the phone is carrier-unlocked. Many phones bought on a contract are locked until paid off.

If you fail either check, buy a physical SIM or pocket Wi-Fi instead.

Step 1 — Install at home on Wi-Fi

Pixel: Settings → Network & internet → SIMs → Add eSIM → Scan QR code (or Need help? → Enter it manually). If you bought in an app, use its Install button.

Samsung: Settings → Connections → SIM manager → Add eSIM → Scan QR code from service provider.

Other brands: Settings → search “eSIM” or “SIM”. The flow is nearly identical.

When it finishes, name it “Japan” and keep your home SIM as the default for everything for now.

Step 2 — Don’t activate early

Some plans start counting days from the first network connection. To be safe: open the Japan SIM’s settings and turn it off until you land.

Step 3 — On landing

1. Enable the Japan eSIM
2. Set Mobile data → Japan
3. On the Japan eSIM: Roaming → ON
4. On your home SIM: Roaming → OFF

Pixel path: Settings → Network & internet → SIMs → Japan → Mobile data + Roaming. Samsung path: Settings → Connections → SIM manager → Japan, then Mobile networks → Data roaming.

Give it a minute. You should see docomo, au/KDDI, or SoftBank.

Step 4 — APN (only if data still doesn’t work)

A few providers require an APN. Check the email/app for one. If given: Settings → Network & internet → SIMs → Japan → Access Point Names → add it exactly as written, save, select it. Then toggle airplane mode on/off.

Android-specific gotchas

• Galaxy “Add eSIM” missing → your model/region doesn’t support eSIM. Not fixable with software.
• “Couldn’t download” at install → weak Wi-Fi, or the QR was already used. Try another network, or contact the provider to re-issue.
• Samsung dual data switching → Samsung sometimes flips data back to the home SIM after a reboot. Re-check after restarting.
• Mobile Suica/Pasmo → separate issue: transit cards on Android need a FeliCa chip, which most overseas Androids lack. Get a physical IC card at the airport. More in Getting around.

Need an eSIM?

Ubigi Japan eSIM* — Reliable on Android, unlimited options.*

Airalo Japan eSIM* — Simplest app flow.*

Compare everything: Best eSIM for Japan.