if you can access to the menu, TRY THIS.. it happened to me once..

IN SETTING, NETWORK, SEARCH FOR NEW NETWORKS, LEAVE IT A WHILE even if it doesnt recognize no one, then theres an option about how to select them, its in AUTOMATIC, put it in MANUAL, then in the BAND put whichever its not selected, then put it back where it was.. at this point in the network list select your current network, then SEARCH FOR NETWORK AGAIN AND IN A WHILE it will come up your network. DONT FORGET TO PUT IT BACK ON AUTOMATIC since u gonna select the network by ur own..


IF YOU CANT ACCESS TO THE MENU, IT COULD BE LACK OF CDA....