Activating your Cellesim eSIM before arriving at LAX or SFO is straightforward. After purchasing online, you'll receive an email with a QR code. Simply scan this QR code using your phone's camera (usually found in your cellular settings) to add the eSIM. Ensure you enable data roaming for the eSIM line once you land in California to begin using your mobile data immediately.
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How do I activate my Cellesim eSIM on my phone before I land at LAX or SFO?
Updated May 30, 2026
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