Replaced the battery, now the Wifi doesn't work.

As the title suggests, I replaced the battery on an S6 recently, and now a couple of weeks later the wifi is unstable to the point of uselessness, it recognizes the existence of wifi signals but can’t successfully connect to any of them, and any attempts to do so will just leave the phone trying forever.

I’ve already tried replacing one of the only components that’s connected to this functionality, that being the Wifi wire, but that changed nothing. Is this perhaps some kind of board issue I inadvertently triggered with the initial battery replacement?