iPhone 6 WiFi/Bluetooth Not Working

So for the past 6 months or so, my GPS has never worked accurately on my iPhone 6. It would get close to my location, but would always lag behind a bit. I never worried about it because if I'm travelling I usually get my wife to use hers.

BUT, now I've found a need for accurate GPS on a daily basis... So I purchased a new antenna and replaced it.

The new antenna worked (properly - was recognizing WiFi, had bluetooth capability, GPS worked, everything) for about 20 minutes, and now the option to turn on WiFi/Bluetooth/GPS is completely disabled.

Like. If I go to Settings > WiFi, the button is just grey. If I go to Settings > Bluetooth, all I get is the circular loading symbol and it won't stop "loading."

So... I talked to someone and he recommended restoring my phone to factory settings. I done so. I erased all content/settings and set it up as a new iPhone. The problem persists. I can not connect to WiFi, I cannot use bluetooth, GPS does not work.

Any help would be much appreciated.