Help, wifi antenna broken?

Hi there,

yesterday I tried to plug in a headset into the headphone jack and it obviously didn't fit all the way in. I saw a little piece of plastic in it and tried digging it out with a paper clip.

After this didn't work out I unclipped the backside and I was able to remove the little bastard.

After turning the phone back on my wifi stopped working. I probably broke the connection to the wifi antenna. But there is no damage visible. The wifi works, but it's not connecting to anything unless I'm right next to it.

Does anyone have an idea what I can do?