Is roaming cost-free in France with my existing UK or US SIM?

The cost-free roaming status in France with your existing UK or US SIM depends on your specific carrier and plan. For UK subscribers post-Brexit, many major carriers like Vodafone UK or EE have re-introduced daily roaming fees for EU destinations. US carriers, such as Verizon or AT&T, typically offer international roaming packages or charge high pay-as-you-go rates. DataESIM provides a transparent, prepaid alternative, ensuring you avoid these potentially significant roaming expenses.