I have the same Hub 3 issue. Tried network reset few times on phone. Done pin Hall reset on Hub without any joy. Virgin team came too, baffled with the problem but couldn't figure out. Changed everything including Hub 3 but it's not resolving the issue. I was hoping that latest update should fix it, but it hasn't and now its a pain.
Also how do I report this as error log to Samsung? It just happens suddenly and there is no way of catching error log for it.
This is nightmare. I have took part almost every beta program but this time its the worst ever.
Samsung doesn't even acknowledge that this is an issue and fix is coming or what??