I'll be tethering and data connection just hands so nothing can use Internet. This happens after a few hours. Busy network connection or something else?
I think I may be having the same issues you are having. I will be connected to my home wifi and leave the area. Even after a few minutes the phone keeps tethered to my wifi even though I have a zero signal. I will attempt for a few minutes to connect to the internet but will keep getting the "unable to load" msg. Its happened a few times now. Seem to be happening with less time between occurrences.