While on vacation in Mexico, the wifi on my wife's Samsung Galaxy S5 stopped working. The phone was essentially left in the room (no beach or pool exposure). When I go to turn on the wifi antenna, it just says "turning on", however never does.
I checked the advanced settings to make sure the phone sleep function or other settings weren't preventing it from turning on.
I did a factory reset, which also did not fix the problem. Despite no history of water damage, I placed it in a bag of dry rice for a few days, which also did not help. There is no visible external damage to the phone either. Fortunately, the cellular functions (3g and LTE) still work. However, I would consider wifi a necessary function. Unfortunately we do not have insurance on her phone, so I would really like to fix this problem.
I cannot find reports on similar problems online with this phone. Since a factory reset did not fix the problem, I am inclined to think that this is a physical problem rather than firmware or software. The only wifi related part I have found is the signal flex cable. However, I am not sure this is the culprit. Any suggestions would be greatly appreciated.