Choose
Automatic
to set the phone to automatically search for and select
one of the cellular systems available in your area.
Or, choose
Manual
if you want to select the desired system manually from
a list of systems. If the connection to the manually selected system is lost,
the phone will sound an error tone and ask you to select a system again.
The selected system must have a roaming agreement with your home
system, that is, the operator whose SIM card is in your phone.
Note: Roaming agreement—An agreement between two or more
system service providers to enable the users of one service provider
to use the services of other service providers.
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