jail broke iphone lost internet

Factual Questions
1

Any help for me? My jail broke iphone (the original one) has lost internet. I did the basic trouble shootings :

settings
general
network
cellular data nework
entered APN

Didn’t work this time. Any help?

2

Have you tried doing a Hard restart by Holding down the Power and Home buttons at the same time till it shuts down.

I’ve had some success dealing with flakiness doing that.

Also it might be worth it using APN changer from http://www.unlockit.co.nz/ to reset the APN settings. I’ve used it a few times to change settings when the manual approach was not working.

3

What OS (Settings/General/About: Version) and Modem Firmware (Settings/General/About: Modem Firmware) version are you on?

Does WiFi work?

You might need to reset your AT&T Carrier Settings (ATT_US.ipcc) file.

Here are instructions:

OS 3.1:

http://brandongoodman.posterous.com/updating-iphone-atandt-carrier-settings-to-ac

http://www.iphonehacks.com/2009/09/how-to-enable-mms-on-iphone-os-31-att.html

OS 3.0:

http://www.iphonehacks.com/2009/06/hack-to-enable-mms-on-iphone-os-30.html

If you have trouble understanding those instructions, or if it doesn’t work, contact me on IM (see profile, make sure to mention SDMB in the IM message/request).