Will I have mobile signal in the Paris Metro and on high-speed trains like the TGV?

Yes, you can expect excellent mobile signal with WorldESIM even in traditionally challenging areas within France. The country boasts a robust telecommunications infrastructure. You'll find reliable 4G/LTE (and often 5G) coverage throughout the Paris Metro system, including tunnels and stations, thanks to extensive network deployment. Similarly, on high-speed trains like the TGV, WorldESIM leverages strong partnerships with local carriers, ensuring consistent connectivity for work or entertainment as you traverse the French landscape.