9900 on TMobile with BES Enterprise data plan. Tethering works with USB cable. I cannot get the hotspot to work. I am running v184.108.40.2061 / 220.127.116.114. 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.