How to sync my iphone to my emerson tv?

How to sync my iphone to my emerson tv?

In simple terms, you don't. The TV has no memory to allow syncing.

Now, if you mean how to display your iPhone screen on your TV, you use MHL or Miracast, depending on what the TV will support. Emerson probably doesn't support direct Miracast, so you'd need an MHL cable to attach the phone to an HDMI port.