*IMPORTANT! HELP!* Antenna problems

I dropped my iPhone in the pool, got water damage, so I opened it up and put it in rice. When I take it out, I notice a little piece in the rice which turned out to be the upper light antenna interconnection flex (here's a picture http://www.unionrepair.com/iphone-6-uppe...)

Now I have no idea for the life of me where it goes, and I need to find out urgently because I cannot get service on my phone. If anyone knows where it goes then please let me know, or at least if someone's up to it open up your own iPhone 6 and try to find where it goes.

Best regards, Klaidi

*EDIT* I found the location where it goes, I screwed it in, restarted my phone, reset network settings, but it still says "Searching...". Any ideas what I can do to resolve this?