I have :
iPhone 3gS,
Data plan currently is none (pay as per usage plan - 5p/10kb),
3G Activated,
Settings:
APN : portalnmms
Proxy Server and Port : 10.10.1.100 ; 9401
(only safari and maps work)
APN : www
Prooxy and Server Port : 10.10.1.100 ; (blank)
(Only IM's work, now safari and other things won't work!)
The portalnmms APN is primarily for wap services. Data access is limited through this APN. You would use this APN and server settings for setting up MMS. For using data services I would advise you use the www APN.
The easiest way to set this up would be to go to Settings>General>Network>Cellular Data Network and change your APN from there. change it to the following:
APN: www
Username:
Password:
If you need MMS, then in the MMS section use the first setting you mentioned in your post (portalnmms). If you don't need MMS then leave everything blank. I personally don't use MMS.
If you can't see the Cellular Data Network option on your phone then the easiest solution is to set ip your APN thru the unlockit website. for this you will need to be connected to wifi (or use your first setting you mentioned where Safari works).
Follow these steps:
1. Ensure you have a Wifi/Data connection.
2. Open Safari and go to unlockit.co.nz
3. Tap on "Continue"
4. Tap on "Custom APN"
5. Tap on the "carrier" option and scroll down and select "IN - Vodafone"
6. Tap on "Create Profile"
7. Install the profile that opens up by tapping on the "Install" button.
8. If required, reboot your phone.
Everything should be working now. Although I would advise you to get a 3G data plan. The pay as you go option will turn out to be very expensive once your apps start using data.
Let me know if this works for you.