See I have mentioned the appropriate settings that you can made for Vodafone.
First go to Settings >> Connections >> Hutch WAP (GPRS) (or create if you don’t have this already)
Connects to: Work
Access point: portalnmms
User name: (empty)
Password: (empty)
Authentication type: Select the option `None'
Primary DNS: (empty)
2nd DNS: (empty)
IP Address: 10.10.1.100
After doing this make another settings over here,
Go to Settings ->Proxy -> Hutch WAP Proxy (Again, create if you don't have it already)
Connects from: Work
Connects to: WAP Network
Proxy (Name:port):10.10.1.100:9401
Type: Select `HTTP'
User Name: (empty)
Password: (empty)
Open Internet Explorer -> Tool -> Options -> Connections
Un-check the Automatically Detect Settings option
Select Network: WAP Network and after that reboot the phone once.
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