did you go back and put the settings in the cellular data network after you edited the file? other than that, i'm not sure. here are the settings that i am using currently.
Originally Posted by evolancer13
MMS Proxy: 216[dot]155[dot]165[dot]50[colon]8080
MMS Max Message Size: 1048576
MMS US Prof URL: http[colon]//www[dot]apple[dot]com/mms/uaprof[dot]rdf
*replace all the [dot] with .
*replace all the [colon] with :
i don't know if it makes a difference or not, but i have a blackberry data plan on my account since that was what i was using before i got my iphone.