Is there a way we can share mobile screen with windows mobile or android. Currently i am using windows 8.1 and Nokia Lumia 620.
Windows Phone 8.1 supports sharing the screen to Mircast devices (where the phone is compatible - not sure if the 620 is), or over USB to desktop PCs running the Project My Screen app.
I'm not aware of a phone acting as a Miracast receiver, so you might not be able to share screen from phone to phone
Yes, You can but only when your device connected with PC or TV using USB cable. Download and Install this app on your PC, connect your phone with PC and you will get Pop Up Message on your phone to project the screen or not.