This app will open Wi-Fi Display settings if your device support it (or in other words SHORTCUT). Some devices support Wi-Fi Display, but the setting is either hidden or not present. It should also work on Samsung device now. I don't have LG device, so I can't test it.Only download this if your device support Wi-Fi Display - Miracast, but you can't find how to enable it.To Share-mirror mobile screen to SmartTV or Wifi Display dongle connected to TV, Following steps needs to performed:+ Check your TV wheather it supports Wireless Display- Miracast.+ Make sure TV is connected to the same WiFi network as your mobile device. You can't connect it with wired connection (LAN).+ Make sure your Android device version is 4.2 or higher.+ Fix Samsung S3/S4/S5 (with hdcp) devices mirror to TV - dongle (without hdcp) black screen problem+ Two independ hdcp patchs , to enable and re-start mirror + Mobile need ROOTED , but need NOT update ROM.