LG L1400 - Manual (Page 106)

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Note I f there is no GPRS coverage and you have chosen Power on, the
phone will periodically try to establish a packet data connection.
Settings
World Phone
(Menu 9.6.2)
When the America(850/1900) option is selected the device can be used in
the US, and when the Europe(1800) option is chosen the device can be
used in European countries.
GPRS Attach
(Menu 9.6.3)
If you select Power On and you are in a network that supports packet data,
the phone registers to the GPRS network and sending short messages will
be done via GPRS. Also, starting an active packet data connection, for
example, to send and receive e-mail, is quicker. If you select When
Needed, the phone will use a packet data connection only if you start an
application or action that needs it. The GPRS connection is closed after it
is not used by any application.
Note The US frequency is set at 850/1900 MHz and the European frequency
is set at 1800 MHz.
Note of caution that depending on the SIM card, the order of the menu can
differ.
The World Phone menu option sets the GSM frequency band between the
GSM 850/1900 used in the US or GSM 1800 used in Europe.
This phone does not automatically search and set the GSM frequency. Instead
the user must manually set the frequency band based on his/her location. The
default setting is “America (850/1900)” so in order to switch to the European
frequency, simply select the “Europe (1800)”option from the World Phone
Setting menu. After the selection, turn the phone off and on again to begin
using the new frequency setting. When traveling to different parts of the
world, you must always set the World Phone Setting to the correct frequency
band.