Videocon V1655, Руководство пользователя

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Call barring
In order to activate this service, it requires
the services provided by the network service
provider. When you change barring
password, you need to input the old
password.
Network setup gives the user the option to
select a desired network and addition of a
new network to the network list. The
network setup gives you the following
options:
Network Settings
Choose an alternate network service
provider if your primary provider does not
provide services in a particular area. You can
also keep your device on during a flight by
setting up the Aircraft mode.