France boasts impressive mobile infrastructure, so you can generally expect excellent coverage. With your eSIMBuy plan connecting to top-tier networks, you'll find reliable 4G/LTE (and often 5G) signal even within the Paris Metro stations and tunnels. On high-speed trains like the TGV, connectivity is strong for the majority of your journey across the country. This means you can stay connected and productive, or simply stream entertainment, whether you're commuting in the city or speeding through the countryside.
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Will I have mobile signal in the Paris Metro and on French high-speed trains (TGV)?
Updated April 22, 2026
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