So I have had problem after problem using tmobiles data plan on my unlocked iPhone 3g. I have an unlimited data plan and the connection works horribly slow. When I went into the cellular data network settings the absolute ONLY apn that will work is internet2.voicestream.com, the others (wap., internet3., epc.tmobile, etc) will not work at all for the internet/data plan. I currently cannot find an apn and mmsc that will allow me to send pic mail. My mms is turned on in the settings and my phone is currently unlocked, but I do not have cydia and do not want to reset my phone and unlock it again to get a cydia icon. Does anyone know of anything else I could do. There must be something bc I know tons of people who use their iPhone with tmobile no problems.