THE LG G2's micro USB port uses the SlimPort adaptor standard. To connect to an HDTV, you will need an HDMI cable, a SlimPort adaptor, a wall adaptor and usb cable (provided in box).
Connect your device to the SlimPort adaptor.
Note: SlimPort may require a power source. Please refer to manufacturer for instructions.
Finally connect the HDMI cable to your HDTV and SlimPort adaptor.
You will need to change the input of your HDTV to the correct HDMI input.
Note: Some SlimPort adaptors are made for specific devices. Check that the adaptor you purchased is compatible with your device.