is the RCA converter have male or female ends?
meaning is it a box with female RCA (yellow, red/white) ports or is a cable that has male ends?
you need a micro hdmi to HDMI cable, then a box that converts HDMI to baseband RCA (yellow, red/white).
this phone (and many others) use a micro USB port that emits HDMI signals at that port.
You need an MHL adapter that has a FULL HDMI port on the end. you connect an HDMI cable to a HDMI to composite box OR you can find an HDMI to composite cable like this:
there are many configurations to getting this to work, some more expensive than other methods.