Originally Posted by john-s

Did you hactivate by chance? Using real activation (uncheck activate in Pwnage tool) MMS seems to work fine.

No I didnt hactivate it. This is just really wierd

So anyone think I should contact apple or AT&T I would really rather not but i dont know what to do at this point I really need that MMS feature???

Originally Posted by love2hackstc

Hey guys so the title pretty much explains everything I updated my iPhone 3gs to the 4.0 software and I dont have the camera icon in my messaging and when i go to setting and look for the MMS there is nothing there I already tried the restore and that didnt work????????????? Anyone know what to do??
THANKS

I have a simular problem, I have and than I lost MMS and internet on 3G too. I discovered that this was happend after I edit file "/System/Library/Carrier Bundles/TMobile_me.bundle/carrier.plist", I was truing to add a "AllowEDGEEditing" line.

Solution is to revert this file to original. Than my MMS and internet on 3G come back and work again.

What I found is that every time I edit this file this happened. It look like that this file has protection from iOS 4 for editing. Olso I found that we have a "signature" line in "carrier.plist" file.

Originally Posted by beba

I have a simular problem, I have and than I lost MMS and internet on 3G too. I discovered that this was happend after I edit file "/System/Library/Carrier Bundles/TMobile_me.bundle/carrier.plist", I was truing to add a "AllowEDGEEditing" line.

Solution is to revert this file to original. Than my MMS and internet on 3G come back and work again.

What I found is that every time I edit this file this happened. It look like that this file has protection from iOS 4 for editing. Olso I found that we have a "signature" line in "carrier.plist" file.

Do you have T-Mobile though because it might be different for AT&T

Yes I am on T-Mobile, Europe.

yesterday i upgraded my old 16GB 3G to 4.0. there were no apn settings showing at all. what i had done was used my old list of cydia apps and added them one by one. i had added the mms and tethering tweak and that screwed up the apn. i deleted that did the reset all network settings thing and then rebooted and my apn option showed up again. so i then added my data settings for t-mobile edge and all was fine

then i just copied over the t-mobile mms settings which i still had on my 3GS iphone which i had decided not to upgrade to 4.0. i manually added the t-mobile settings to the 3G had both the apn data settings installed as well as the mms and tethering settings correct and all working just fine.

Originally Posted by bootleg

yesterday i upgraded my old 16GB 3G to 4.0. there were no apn settings showing at all. what i had done was used my old list of cydia apps and added them one by one. i had added the mms and tethering tweak and that screwed up the apn. i deleted that did the reset all network settings thing and then rebooted and my apn option showed up again. so i then added my data settings for t-mobile edge and all was fine

then i just copied over the t-mobile mms settings which i still had on my 3GS iphone which i had decided not to upgrade to 4.0. i manually added the t-mobile settings to the 3G had both the apn data settings installed as well as the mms and tethering settings correct and all working just fine.

I dont have T-Mobile I think things are most likely different on the networks. This is just I cant believe there is no MMS this is really weird

Originally Posted by love2hackstc

I dont have T-Mobile I think things are most likely different on the networks. This is just I cant believe there is no MMS this is really weird

Did you ever install alternate .ipcc files or mobileconfig files in the early 3.x days? If so, have you removed them yet? I've found in a lot of cases that having mobileconfigs or .ipcc files interfered with proper use of MMS on the AT&T network. To check, go to Settings -> General -> Profiles. You can remove any unnecessary / third-party .IPCC files or mobileconfig files from there. After doing that, reboot the phone and see what happens.

I have upgraded to iOS4.0 and MMS works for me. Maybe you want to restore again?

Hi i had the same problem

all you do is restore phone with 4.0 iso and when asked to make new iphone or choose backup just make a new iphone.
boom done