Yes, absolutely! We highly recommend installing your EastESIM before you even depart. You can scan the QR code and complete the setup from the comfort of your home or during your flight. Your plan's validity period with EastESIM only begins the moment it connects to a local network like NTT Docomo or SoftBank once you arrive in Japan. This ensures you have immediate internet access the second you touch down at Narita or Haneda Airport, ready to navigate Tokyo's vibrant streets.
HELP CENTER
Can I activate my EastESIM Japan eSIM before landing in Tokyo?
Updated April 22, 2026
Was this answer helpful?
Related questions
Other answers in this topic that travelers found useful.
Is there any hidden fee or contract?
Answer: Absolutely not. At Cellesim, we believe in 100% transparency. You only pay the price you see on the screen. It is a one-time prepaid…
Read answerWill I have coverage at the Great Wall of China and other remote attractions?
Coverage with EastESIM will generally be strong at popular tourist sites like the more accessible sections of the Great Wall of China (e.g.,…
Read answerCan I top up or extend my plan?
Answer: Yes, you can easily top up your active plan. Simply log in to the "My eSIMs" section on our website and select the eSIM you wish to …
Read answerIs the connection stable across the country?
Answer: Yes. Cellesim partners with top-tier local network providers in every country to ensure you get the best possible coverage and 4G/5G…
Read answerWhen does the plan validity start?
Answer: Your plan's validity period (e.g., 7 days or 30 days) only begins when your eSIM connects to the local mobile network in your destin…
Read answer