Thanks so much for the reply! I ended up creating a new APN profile called ATT HSPA+. Is same as default profile but MMS port setting points to 8080, not 80. Seems to have fixed the issue.
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Thanks so much for the reply! I ended up creating a new APN profile called ATT HSPA+. Is same as default profile but MMS port setting points to 8080, not 80. Seems to have fixed the issue.