iPhone 3G won't connect to internet through 3G!

[TwoToneAlex]

Hey folks,
I have an iPhone 3g, updated to iOS 4.01, Jailbroken with redsn0w.

I jailbroke it, as I needed the iBlacklist application as I am having a few problems, with a certain someone harassing me .

It crashed the 2 days after the first time I jailbroke it recently, just froze, went to apple logo, on an infinite loop, the second time after restoring it, installing all the apps etc, and not selecting multi-tasking from the Jailbreak checkboxes, it crashed a few days later, now third time round it's running ok, currently installing an app every other day, to see if it's a specific application that is causing the problems.

It's on 02 PAYG, with unlimited internet, was working fine until most recent install but now won't connect to the internet with anything (safari, youtube etc..), I have reset the network settings etc, but still doesn't want to connect unless i'm connected to my wireless at home or somewhere else.

I've tried hard resetting also, but to no avail

Any idea's?
Cheers,
Alex

Help

[forsaekn]

Turn 3G off. That GSM carrier does not comply with the iPhone's native 3G radio. You will only be able to use Edge.

-Edit-
Also you should have unlocked with Ultrasn0w.