MMS not working in iPhone4S when installing config profile with APN
When we use the iPhone Configuration Utility (either the latest version or previous versions) to create a config profile with APN info, then install the profile to an iPhone4S, we noticed that MMS (multimedia messaging) was no longer working. This means we could not send or receive MMS messages. And this is MMS going over the MMS protocol (and not iMessage). We had not seen this before. We routinely do config profiles with APN info and have done for all iPhone models and iOS version before the new iPhone4S. Never had a problem with MMS or anything else. This is for iPhone4S devices in the AT&T network. It is easy to reproduce and you don't need an enterprise APN for that. In fact just a config profile with AT&T's APN settings will still break MMS when installed (other than the MMS, everything else works fine).
It does not appear an iOS 5 issue. iPhone4 (or iPhone3GS) with iOS 5 do not have this problem. It appears to be tied to the new iPhone4S hardware. The same configuration profile (with the APN info) works fine on iPhone4 with iOS 5 (MMS works fine), but when you put the very same configuration profile to an iPhone4S, MMS quits working.
Doing a network reset does not solve the problem. Only removing the profile fixes the MMS
Any ideas, explanations or workarounds?
iPhone 4S, iOS 5