One finding: As I already wrote I have no signal on my Rhod100, but some registration to network is done (autoconfig APN and so on). Now I'm found during my play with OMGB without signal I have incomming call from my wife (oops
). In her phone she heared that my phone is inaccessibilited. In our country operator (provider) always sending SMS about missed call if the called phone is off (power off/out of signal). In this case no SMS about missed call has been send. It probably means, that my operator think I'm online, even if I'm not. May be help you ...