I've tried everything it seems trying to get my phone's wifi tethering to stop tethering after about 20 minutes of working perfect. Then all of a sudden it says "what the hell your phone has taken back control of wifi" or something like that. I've looked at virtually every forum about fixing this and they all said to change the device profile, which works, but still after about 20 minutes my phones takes back control and messes up again. Please help.