A:AnswerNo this is a mini HDMI to full size HDMI. You need a HDMI on one side and the port that matches your phone on the other.. plus your phone has to support MHL. LG has some phones that support MHL but harmony isn't listed.. you may have to get a Chromecast and cast to your TV through WiFi.
A:AnswerThis cable doesn't work with iPhone.
Try the Apple - Lightning Digital A/V Adapter - White Model: MD826ZM/A and HDMI cable to connect your iPhone to a TV.