Yes, for seamless operation with CoreESIM in Barcelona, your device must be carrier-unlocked. A locked device is restricted to its original network provider and cannot register on the local Spanish mobile networks, such as Movistar, Orange, or Vodafone, which CoreESIM utilizes. Before purchasing a CoreESIM plan, verify your device's unlocked status by contacting your home carrier or checking your device settings. This ensures proper network registration and data access upon arrival in Spain, preventing connectivity issues.
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Is an unlocked device required for CoreESIM functionality in Barcelona?
Updated May 30, 2026
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