Samsung Galaxy S Losing connectivity
Got my Galaxy S Stratosphere a couple of months ago and same issue. Only when I drive thru certain parts of our valley I lose a signal and can never re-acquire it unless I reboot the phone.
And just a couple of days ago when I reboot, the phone starts beeping for no reason and won't stop until I plug it in my charger. And the battery is still full, so I know that's not an issue.