Well, Moscow had signal carrying cables in the metro for years. Full coverage since 2018: https://www.expresstorussia.com/news/the-moscow-metro-now-has-a-full-4

Well, Moscow had signal carrying cables in the metro for years. Full coverage since 2018: https://www.expresstorussia.com/news/the-moscow-metro-now-has-a-full-4g-coverage.html https://www.expresstorussia.com/news/the-moscow-metro-now-ha... I have always been confused how some countries have such bad coverage. Before Wi-Fi Calling, it was a nightmare to be inside any apartment building I've been to.