I own a Asus M530w. When I turn the device off and on, the telephone functionality does not turn on. Both wi-fi and bluetooth connections are possible but when I go to wireless manager it does not "see" phone and does not let me turn it on. I have to put out the battery for a few hours until the system clock resets and then it is fine for a while -- so I guess it is not a hardware issue, maybe something wrong with registry or something.