I my Bluetooth, WiFi, GPS navigation nothing worked on my Samsung galaxy note 3. I seen I could get a new motherboard for under $100 and decided that was the cheaper route to go about my issue than just replacing my entire phone.
Repair was fast and easy. No soldering required. Just disconnect a few simple electrical plugs , take out the older motherboard, replace with new and plugged it in.
Is not as hard as it sounds.