https://www.theregister.co.uk/2017/10/05/microsoft_edge_ios_android_beta/

Microsoft has released a beta version of its Edge web browser for Apple iOS and Google Android devices.

The Redmond windows fitter said it created the ports as a way to let iPhones and 'droids better communicate with Windows 10 devices. Neither will look to directly compete with Chrome or Safari, but rather will be a custom option for those who want to better integrate their phones with Windows 10.