Simple Mobile iPhone MMS Settings
iPhone 3G 3GS 4 Updated 4.2.1 Settings cellular data apn: Simple username: password: mms apn: Simple username: password: mmsc: http://smpl.mms.msg.eng.t-mobile.com/mms/wapenc mms proxy: 216.155.165.50 mms max message size: 1048576 mms ua prof url: http://www.apple.com/mms/uaprof.rdf I have verified the settings above with an iPhone 3Gs running iOS 4.02.