HF Connector - Replace parts in a Nexus S

I have a Nexus S device (model i9023). My current earpiece is torn - the wires are cut, and the body could not be screwed out because the specific body's screw is stuck. However, I can gently replace it without breaking the body. I see a "HF" connector connected to the left of what I see in the picture of the earpiece unit. To be more specific, I took some pictures of it, since I can't get the data from fixit . Here's a picture of what dealers are selling in eBay. This picture is pretty descriptive. All dealers provide a unit containing the earpieace speaker as seen upwards, a proximity sensor as seen below and the connector to the motherboard, to the right. This is what I saw in fixit: as you can see upwards, there's another group of wires (orange) to the right of the proximity sensor, which doesn't exist in the seller's unit. The pictures I took of my device shows exactly what I mean: This **"HF" wires** down there doesn't exist in the units for sale > Don't mind the fact that in my pictures there's no speaker, its > because its been torn. that's the reason why I was wandering around thinking of buying a new EM-Tech EME1511AFRC replacement unit in the first place... So does anyone know what's that HF and what am I losing if I buy a new unit without it?