Open Settings , select Connectivity > Administrative settings.

Select from the following:

• Packet data – Define when to use packet data connections, and enter the access point to be used if you use your phone as a modem for a computer.
• Data call – Define the time-out period after which data call connections automatically end.
• Presence – Edit Presence network service settings. To register for the service, contact your service provider.
• SIP settings – Create or edit SIP (Session Initiation Protocol) profiles, which are necessary for making Internet calls.
• XDM profile – Edit XDM profiles.

The settings available for editing may vary.

To save your settings, select Back.