Is there one antenna cable or two?

Hi,

I recently followed the guide to replace the screen on my s8 plus and managed to get it back together and seemingly working but it no longer recognises the sim. When I spoke to someone they suggested that I may have damaged the antenna cable when doing the repair.

At the time I didn’t know which bit the antenna cable was but I went back to the screen repair video and checked out what was done with the cable. I remember when dismantling that in my s8 plus I had only a single blue cable but in the video there was a blue and a white one. I am now wondering if I have connected the blue wire to the wrong connector or if there was a white one which I some how missed and have not put back in.

Could you tell me please, are there models of the s8 plus that would have only a single blue antenna cable?

Thanks Steve