In java mobiles a separate setting is required in some phones..Try following steps.
Enter the main menu.
Select Settings, configuration, personal config. setting
Add new (From options)
Select Access point and provide details
Account Name
Ask your service provider)
Go to Access point settings;
Data bearer: Packet data
Go to Bearer settings:
Packet data access point: (Ask your service provider)
Network type: IPv4
Authentication type: Normal
Leave other fields as blank
Save the settings and activate it
Restart your set and you are now ready to surf internet.
This is working in my device , hope this helps you.