I have AT&T with the "go plan" with MEdiaNet Unlimited & Messaging Standard 1000. So far, I sent 3 to myself(as a test) & 2 to my girlfriend & they all went though. The only one that didn't work was because it said the file was "too big" to send(840 kb). So these are my settings. Try it with your phone, maybe it will work( notice- no caps). Good Luck!!
MMSC: http://mmsc.cingular.com/
PROXY: 066.209.011.032
APN: wap.cingular
USERNAME: [email protected]
PASSWORD: cingular1
IMAGE SIZE: Maximum
USER AGENT: iphone
