Yes, for most of the journey. Spain has an excellent network. You will have a strong, stable 4G/5G signal for the majority of your high-speed train ride (e.g., Madrid to Seville). However, you must expect the signal to drop inside the long rural tunnels, but it will reconnect instantly.
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Will I have a signal on the high-speed trains (Renfe/Iryo)?
Updated April 22, 2026
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