Will WorldESIM provide internet coverage on the Laos-China Railway high-speed train?

While your WorldESIM will generally provide 4G signal at key stations along the Laos-China Railway, such as Vang Vieng and Boten, expect intermittent connectivity inside the numerous tunnels between Vientiane and Luang Prabang. The train's rapid movement and the mountainous terrain can temporarily disrupt the signal, but it usually resumes in open areas.