3G icon is gone Hey after 2 months of using my 3G, lastweek, my 3G icon is gone and only full bars chinaunicom and ... I still have 150RMB on my card. I have tried evrything re-input apn, restart my ipad, reset network setting, remove reinsert sim card still no 3g icon and cannot connect to internet outside wifi network. Anyone can help before i get a new sim card? My sim is 399RMB with usb dongle included at 80rmb per 1gb of data. Thanks.