Tokyo Airport eSIM Arrival: Narita, Haneda and Japan Data

Which airport Wi-Fi instructions should I use?

Use the correct operator’s current information: Narita Wi-Fi facilities or Haneda wireless LAN guidance. Do not assume the network name or process is identical at both airports.

Which Japan plan fits my journey?

Match allowance and validity to Tokyo and any onward itinerary. compare fixed and daily data; video, backups and hotspot use can increase data requirements. Check the selected network and covered destinations rather than assuming 5G or service along every rail route.

What should I prepare before arrival?

Save the accommodation address, transfer reference and installation details. check your exact device, follow the product’s activation timing and select the travel line for data. Keep primary-SIM charges separate and avoid deleting the profile without instructions or support advice.

See each step on iPhone and Android

Use the walkthrough to see how buying in the Graba SIM app, installing on Wi-Fi and choosing your data line look on your own type of phone. Screens are illustrations: menu names vary by phone, software version and region.

Protect your home SIM from roaming charges

Switch roaming off on your usual line before you leave home, not after landing, so your phone cannot use your home provider’s roaming data when it first connects abroad. Then switch the travel eSIM on when you arrive.

• Before you fly, iPhone: Settings → Mobile Service (or Cellular) → your usual line → turn Data Roaming off. Keep mobile data on that line until you land.
• Before you fly, Android: Settings → Network & internet → SIMs → your usual SIM → turn Roaming off. On Samsung, start in Settings → Connections → SIM manager.
• When you land: open the travel eSIM line, make sure it is on and turn its Data Roaming (or Roaming) on. Then choose the travel eSIM for mobile data and turn off automatic data switching.

These settings control mobile data only. Your home provider may still charge for calls, texts or other services, so check its terms. Read the roaming settings guide.

Choose your next step

Japan eSIM plans and Tokyo trip-length comparisons.

Reviewed 16 October 2026 using current product information and the sources linked above. This is planning guidance, not a claim of independent network testing. Check the selected plan’s current price, coverage and activation terms before purchase.