Hello. I am restarting this thread because the one I started previously has gone off track. Short story is:
Using "unlocked" Icon on AT&T. Everything works at HSPDA+ speeds including Visual Voicemail, Internet, SMS, etc. with the exception of INBOUND MMS. Outbound MMS works fine. Inbound shows up from "unknown" and says message not found.
A twist: I purchased a Straight Talk sim card, which uses AT&T network and network elements. With this sim, MMS works in both directions (as well as internet).
I have tried every MMS APN listed on the web, plus a few that are not listed that a very nice Tier 2 AT&T engineer gave me (but didn't solve the issue). it.cingular and broadband were two I hadn't seen anywhere else. But, no luck.
I'm hoping someone on here can tell me if this sounds like an APN issue, a proxy server issue, an MMSC issue or a message formatting issue? I don't know enough about MMS message flow to know exactly which elements are involved in receiving vs. sending.
Anyone?
Thanks in advance.
Using "unlocked" Icon on AT&T. Everything works at HSPDA+ speeds including Visual Voicemail, Internet, SMS, etc. with the exception of INBOUND MMS. Outbound MMS works fine. Inbound shows up from "unknown" and says message not found.
A twist: I purchased a Straight Talk sim card, which uses AT&T network and network elements. With this sim, MMS works in both directions (as well as internet).
I have tried every MMS APN listed on the web, plus a few that are not listed that a very nice Tier 2 AT&T engineer gave me (but didn't solve the issue). it.cingular and broadband were two I hadn't seen anywhere else. But, no luck.
I'm hoping someone on here can tell me if this sounds like an APN issue, a proxy server issue, an MMSC issue or a message formatting issue? I don't know enough about MMS message flow to know exactly which elements are involved in receiving vs. sending.
Anyone?
Thanks in advance.