New SIM and internet not working on iPhone?

I have just arrived in the UK from New Zealand. I picked up a T-Mobile SIM card today on Pay as you go for my iPhone 4s.

The Texts and Calling are working fine. But the internet is not working. Phones 4 U where i bought the SIM couldn't help and sent me to an EE store to get them to help and they couldn't help either. I visited 2 EE shops and neither could do a thing.

I also talked to someone on the chat on their website and called their help line.
The guy on the phone said i should restore my phone. That doesn't seem right to me? I guess I would prefer not to restore my phone because it's is a pain to load the music back on.

Does any one have any suggestions?

Last thing, I found this http://www.t-mobile.co.uk/...onesupport and when I look up iphone it says T-Mobile only supports SMS for iPhones. But surely that can't be right because why would they sell me a SIM card? And why wouldnt the help line tell me that they don't support internet on iPhones?

On the T-Mobile website once you've logged into your account there usually is a section where you can text the internet (as well as text & messaging) settings to your phone, can't see why having an i Phone would make any difference to whether you have the internet.
Try this link: http://support.t-mobile.co.uk/help-and-support/index?page=home&cat=SOFTWAREDOWNLOADS
There's also a page with info on how to manually setup the internet.

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