China, the US, the UK, France, and Germany are predicted to be the top five outbound roaming markets in 2025.The US remains a major outbound roaming hub, with strong travel links to Canada and Mexico.Brexit has reshaped the UK's outbound roaming market, leading to increased adoption of travel eSIMs.China's outbound roaming market is recovering after COVID-19 travel restrictions, with a focus on affordable eSIM solutions.