The Miracast Screen Sharing App is an Android utility that enables users to share their Android phone's screen on to Smart TV or Miracast enabled Dongles. The process is as simple as clicking a button, and users will be able to share their screen on to Smart TV or wirelessly connected display devices.

It supports all popular Android phones, such as Samsung, LG, Vivo, Honor, HTC, Xiaomi (MI), and many more. 

You will not need to root your device, and the app is completely free to use. It's a user-friendly utility, so even if you have no prior knowledge of Android, you will not have any trouble using it.