iPhone 6 Motherboard - Doubts about the mother board connectors

Hi guys.

I'm trying to repair an iPhone 6 but I'm having some issues.

I opened the phone normally, cleaned it, but now, front face camera, mic, and the proximity sensor are not working.

My question is: Is it possible to damage only a connector on the iPhone's motherboard? In that case, the front-facing camera and sensor cable.

Because only these items are not working and the others are normal.

Help me.