For a standard 5-7 day trip to Illinois, particularly if your activities involve extensive navigation, moderate streaming, and frequent social media interaction, a CoreESIM with 5 GB to 10 GB of mobile data is typically sufficient. Should your usage patterns include significant photo/video uploads or frequent video calls, opting for a 15 GB plan will provide ample bandwidth, ensuring uninterrupted connectivity and peace of mind.
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What is the recommended data provisioning (GB) for a trip to Illinois using a CoreESIM?
Updated May 30, 2026
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