Edge goes up Android and iOS will be great news for those who use Edge daily on Windows 10 PC. But don't be too hopeful because before that, Microsoft has stated that it doesn't intend to turn Edge into a cross-platform. It is from 2015 and now Microsoft has changed its mind.
However, the limitations Apple offers on iOS may prevent Microsoft from using their EdgeHTML browser engine on the iPhone. In addition, getting EdgeHTML from Windows to Android or iOS also takes a lot of time and money. But it should be noted that the core, Edge's JavaSCript engine is already multi-platform.