09-11-2015 01:40 PM
Welcome to Community@ Rocketfish™!
First thing to do it check all the connections. This includes the micro USB to the phone, the HDMI to the TV and Rocketfish adapter. Also be sure that you are connecting the Rocketfish adapter to a micro USB charger for power. Make sure the TV is on the right HDMI input (whichever one you are plugged into).
This is all that is required of this adapter. If you still do not get a signal to the TV at this point you will have to double check that the phone is compatible. Also you may want to speak to LG to check what settings you may need to adjust on the phone side.