I was wondering if someone can please help me. I have a Samsung Galaxy S3, carrier is Sprint, version 4.4.2. I noticed one day that my WiFi was grayed out and I thought it was weird because I always have it on so I clicked on it to reactivate it and it would say on but it was would be grayed and switch back to off. I have not found a way to fix it yet. I have tried restarting and I have even done a factory reset. It is not rooted or anything. Can someone please help me, I am starting to really worry about it.