Originally Posted by mckinneycm
Check that the Mobile Network is turned on. Go to Manage Connections > Mobile Network (make sure it's checked). Sometimes when the device is rebooted, it will come back up with the Mobile Network turned off.
I have this very same problem that my mobile network is turned 'off' when I start up my device. Is this just when it's rebooted, or just powered on? I seem to have it periodically and it drives me crazy. In other words, is this a known flaw?