This app works(Tested) on most of the mobile phones with Android version 4.0 and above. User can share with friends and also there is help instructions.
Please follow below steps to mirror your mobile screen to smart TV.
1) Your Smart TV should support Wireless Display or any sort of Display Dongles.
2) The TV must be connected to wifi network same as your phone.
3) The Phone version must be android 4.0 and above.
4) Download and run Miracast All App.