I have had my Galaxy S4 since its came out and about 3 months ago, I noticed my wifi wasn't on anymore. so I went to the settings menu and and wifi option is shaded. When I go to the wi-fi options all it says is "turning on". Its been like this for 3 months now and it is a real pain. I took it in to an android repair shop and they could not figure out what was wrong with it. Its a pain because its using all my data and that is not cheap! I figured if I updated it, that would fix the problem but apparently it needs to be connected to wifi to do that. I tried updating through kies on my mac and it says it is unsupported. Im running out of options. I have looked this up on different forums and found no help. Pleeeease someone help me! Im losing my mind!