Can I expect free roaming in Portugal with my existing UK or US SIM?

While Portugal is part of the EU, the concept of 'Roam Like at Home' primarily benefits EU citizens. For travelers from the UK or US, the situation is different. Post-Brexit, many UK carriers (such as Vodafone UK or Three) have reintroduced daily roaming charges, which can quickly accumulate. Similarly, US carriers like AT&T, Verizon, and T-Mobile typically offer international day passes that are often far more expensive than a dedicated WestESIM plan. WestESIM offers a predictable and cost-effective solution for premium connectivity in Portugal.