I'm not sure I understand you completely, since most of your post is incoherent, however, if I get the point right, I believe you either have a defective device or some funky setting, as I have no issue using this function. I used my iPhone hotspot on my car stereo on long journies, obviously my phone screen wasn't on all the time. I also share with friends from time to time and don't keep my phone screen on while they're using my wifi. So it's definitely not the intentional way of it working.