It appears AT&Tâ€™s APN values disappears for some reason after reboot, leaving a user without being able to connect to AT&Tâ€™s data network. Replacing the APN data is a bit simpler than hard resetting your phone, but of course does not prevent it from disappearing again.
The needed values are:
Ultimately at this early stage it is probably better to simply swap your phone for one without the issue, rather than ending up memorising these values.
Have our readers been struck with this problem, and have this solution worked? Let us know below.