I picked up the same problem about 2 hours ago today, and read through this blog. It's NOT a router problem it's a bug with the sensation. I simply plugged my phone into my laptop (which was connected to the wifi network I wanted on my phone). I did not press 'connect phone to internet via PC' or 'connect PC to internet via phone'. I pressed charge only. 10 seconds later I unplugged the phone and i had a full working wifi connection on my phone. This worked for me so no guarantees, but I hope this helps!