Iphone 3G official unlocked.
Is it just me or there is something wrong with beta 3?
Cellular data network is just blank page. There no box to enter address.
It worked fine on beta 1 and beta 2.

Probably a problem with your carrier bundle. Try to create a custom ipcc and update your phone with it...

mine is crashing when tapping: settings -> network -> CDN

yup mine is also crashing..

Mine had a blank page, too. After loading a custom .ipcc, it's crashing when I try to open it. Well, since cellular data is still working for me, I don't really care for now, probably just a bug.

Crashing here too, after uploading a custom ipcc file. Did not try to open it before the upload.

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fab---

Mine did not crash, just blank page.
Uploaded a custom carrier, still blank page.
I need to enter APN to get my data works.
Need to get this jailbroken to edit APN in plist, might work this way.

You don't need to jailbreak your phone to edit the carrier plist (you can use a custom ipcc file for this).

As I said in other post, I did use custom ipcc (corrected APN) and updated through iTunes.
Nothing change, still blank page. And my data is still not working.
I am thinking there is a bug in this 3.0 beta 3 for cellular data network page. It always works for me in other firmwares. There is no need to update custom carrier.

have you tried rebooting the iPhone after installation of the custom IPCC file? this is how it worked for me

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fab---