9900 on TMobile with BES Enterprise data plan. Tethering works with USB cable. I cannot get the hotspot to work. I am running v188.8.131.521 / 184.108.40.2064. I try to connect with my iPad and it says "Unable to join the network 'SSID'" Windows laptop does the same thing. Tried it with WPA2, WPA/WPA2 and none. The laptop will almost connect with none, but not quite.