I can't my PC (which has a wifi connection) to connect to phone (iPhone 6s) with hotspot to work at all. It was working prior but no longer. I have rebooted both modem and phones numerous times to no avail. And I have connected my PC to another phone with another provider (Telstra) with hotspot without ANY issues whatsoever. So I reckon Optus has deliberately put my number in some sort of block where I cant resolve DNS when I connect to the hotspot. Anyone have this problem?