Will I maintain cellular signal within the Paris Metro and on TGV trains?

CoreESIM leverages France's robust telecommunications infrastructure, ensuring consistent cellular signal even in challenging environments. Within the Paris Metro system, particularly on lines operated by RATP, 4G/LTE and often 5G coverage is widely available both in stations and tunnels. On SNCF TGV high-speed trains, connectivity is generally stable across the network, though brief interruptions may occur in very remote sections or deep tunnels. Expect reliable data for streaming and communication throughout your journey.