Provisioning your CoreESIM service for Istanbul before departure ensures immediate connectivity upon arrival. After selecting your preferred data package on CoreESIM.com, you will receive an activation QR code or manual installation details. Scan the QR code via your device's cellular settings (e.g., iOS: Settings > Cellular > Add eSIM; Android: Settings > Network & internet > SIMs > Add more) to download the eSIM profile. It's crucial to install the profile while you have an active internet connection, but activate data roaming for the CoreESIM line only once you land in Turkey.
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How do I provision my CoreESIM profile for <strong>Istanbul</strong> before my flight?
Updated May 30, 2026
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