Most contemporary eSIM-compatible smartphones will function seamlessly in Milan with a CoreESIM. CoreESIM primarily provides data connectivity via partner networks such as TIM or Vodafone. For voice communication and SMS, data-based applications like WhatsApp, FaceTime, or Telegram are recommended. If a local Italian phone number for traditional calls/SMS is a requirement, a physical local SIM card might be necessary, though for most travelers, data-centric communication suffices.
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Will my device function in Milan with a CoreESIM, and how are calls and texts handled?
Updated May 30, 2026
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