What antenna is this? I can't seem to find info online.

OK, major amateur move on my part, but during battery replacement on my Droid Turbo, I popped one of the antenna spring contacts off the main board. I've attached pictures showing the antenna on the midframe, and the location of the actual spring tab on the main board.

The tab has gone to the abyss somewhere, so I attempted to create a new one with some springy copper from a scavenged grounding tab, but I could not get it to solder to the 6 tiny little dots that were left on the circuit board. I chocked it up as a loss, reassembled, and tested, but everything seems to function fine? Only thing I can't test is Bluetooth, but with the setup of the antenna, I'm thinking it is the WiFi antenna, but even that seems to be functioning normally.

Anybody have a clue which antenna I longer have?