Is roaming in Italy free for UK or US SIM card holders, or are there charges?

The availability of free roaming in Italy depends significantly on your SIM card's origin. For EU citizens, the 'Roam Like at Home' policy generally applies, meaning domestic rates extend to Italy. However, for UK residents post-Brexit, many major UK carriers (e.g., O2, Vodafone, Three) have re-imposed daily roaming fees (typically £2-£6 per day). For US SIM card holders, Italy is considered an international destination, incurring standard high international roaming rates or requiring specific, often costly, international add-ons from carriers like AT&T or Verizon. CoreESIM provides a predictable and cost-effective data solution.