Working Settings for Sun Users (based on my Nokia 3110c) from Sun Settings in Nokia 6680:

WEB

Accnt. Name: Sun WAP GPRS
Homepage: http://www.suncellular.com.ph
Use Preferred AP: No
Proxy: Enable
Proxy Add.: 202.138.159.78
Proxy Port: 8080
Packet Data AP: wap


Accnt. Name: Sun WAP

Homepage: http://wap.suncellular.com.ph
Use Preferred AP: No
Proxy: Enable
Proxy Add.: 202.138.159.78
Proxy Port: 8080
Packet Data AP: wap

Accnt. Name: Sun INTERNET

Homepage: http://wap.suncellular.com.ph
Use Preferred AP: No
Proxy: Enable
Proxy Add.: none
Proxy Port: none
Packet Data AP: minternet


MMS

Accnt. Name: Sun MMS
Server Add.: http://mmscenter.suncellular.com.ph
Use Preferred AP: No
Proxy: Enabled
Proxy Add.: 202.138.159.78
Proxy Port: 8080
Packet Data AP: mms

you can still change the proxy for better speed i'm just presenting the general one .
JOB WELL DONE