You can set the phone to automatically select one of the cellular networks
available in your area (default setting), or you may select the desired network
manually from a list of networks.
When selecting a network manually, the selected network must have a roaming
agreement with your home network (i.e. the operator whose SIM card is in your
phone). Otherwise the text
The phone will stay in manual mode until you select automatic mode or insert
another SIM card in the phone.