Since upgrading to 1.4, if I loiter too long in areas where there is no phone signal, it appears that my Pre drops the phone connection. I assume that this a power saving scheme (as used by Phone Technician on my Treo)

However, the phone never seems to re-establish the connection - if I toggle aeroplane mode, it reconnects ok but that drops all the wireless connections.

Is there a way of toggling the phone connection only?