Cell-phone operation giving increased full service in manual/select mode

摘要

In the manual/select mode of scanning, if the manually-selected network is not available, the phone performs a general search, and settles on a suitable alternative network. The phone is programmed to provide full call service on that found network. Upon returning home, the phone automatically switches back to home/auto scanning mode, e.g after a pre-set time, or e.g in response to detection of the home network.