Google removed MiraCast a CPL yrs ago, to push Chromecast product but unfortunately it's WiFi dependent and not everyone lives with WiFi availability. MiraCast is a bigger deal to me so my solution was to simply install a custom ROM on my device, which almost always has native MiraCast support. I'm not sure your device has any custom ROMs as it seems dependent on your Carrier at this time . You're kind of outta luck for custom ROMs if you're running Verizon Wireless. Sprint/Boost kinda have bootloader locks (means no TWRP) on the LG devices so I went with Motorola for customs..