how to set up a new apn in ios 7

There should be no need to setup apn settings on the iPhone.

Is the device being used with a supported carrier?

Is Cellular data enabled?

Settings > General > Reset > Reset Network Settings.

Contact the carrier to rule out a provisioning or account issue, possibly network problems.

Hi,

Actually, there is, if you use ATT mvno.

As it happens, with iOS 6.x people who don't want to overpay and/or don't want to be tied to the same carrier for 2 years, therefore using prepaid plans on ATT MVNOs, used so called "T-Mobile sim swap" trick to set APN in order to get data and MMS (even on factory unlocked iPhones). Worked like a charm. Now, with iOS 7, AFAIK, it doesn't work.

That's why a lot of people asking the same question. Also, I wonder if Apple can comment and fix it.

Thank you very much,

AK

Apple does not comment in these user to user support forums.

diesel,

Thanks for the info about Apple.

I wonder if they and ATT are aware about this?

BTW, I found possible solution:

At step three you should double tap your home button to go to your multitasker and switch to another app. Then you should eject the alternative SIM, replace it with the SIM which APN settings you want to edit, then double tap again and return back to the settings app. You should still be in the APN section within. From here, edit your settings and when they're where you want them to be press the 'back-a-section' tab in the upper left hand corner of the edit APN section. It will save the settings. Wait 10 seconds. You're gold.

http://forums.macrumors.com/showthread.php?t=1642124&highlight=apn+settings

AK