Setting up your CoreESIM for Tokyo is a straightforward process. After purchasing your plan online, you will receive a QR code via email. Scan this QR code using your smartphone's cellular or mobile data settings while still at home. This action installs the eSIM profile onto your device. CoreESIM advises against enabling the data plan until you physically arrive in Japan to ensure that your plan's validity period begins precisely when you need it, maximizing your data allowance.
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What is the CoreESIM setup procedure for Tokyo before my arrival in Japan?
Updated May 30, 2026
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