Chosen Solution
wifi and bluetooth have stopped responding. Phone is in good shape and just replaced battery. Problem began before battery replacement.
I would go through this area as that is where the WiFi/Bluetooth antennas are located, Check for proper connections and loose screws. Also look to see if there is any corrosion as water may have gotten inside but not enough to cause logic board damage. Has anything ever been done to the phone such as housing replacements or previous repairs?
