Modem Settings; Data Transfer - Nokia 3555 Manual Del Usuario

When needed — to set the packet data connection to established when
an application needs it. The connection will be closed when the application
is terminated.
Always online — to set the phone to automatically connect to a packet data
network when you switch the phone on

Modem settings

You can connect the phone using Bluetooth wireless technology or USB data
cable connection to a compatible PC and use the phone as a modem to enable
GPRS connectivity from the PC.
To define the settings for connections from your PC, select Menu > Settings >
Connectivity > Packet data > Packet data settings > Active access point, and
activate the access point you want to use. Select Edit active access point >
Packet data access point, enter a name to change the access point settings,
and select OK. Select Packet data access point, enter the access point name
(APN) to establish a connection to an network, and select OK.
You can also set the EGPRS dial-up service settings (access point name) on
your PC using the Nokia Modem Options software. See "Nokia PC Suite,"
p. 97. If you have set the settings both on your PC and on your phone, the PC
settings are used.

Data transfer

Synchronize your calendar, contacts data, and notes with another compatible
device (for example, a mobile phone), a compatible PC, or a remote Internet
server (network service).
Your phone allows data transfer with a compatible PC or another compatible
device when using the phone without a SIM card.
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