cellular data not working

[Doc_Dirty]

I just bought a new iPhone 3gs to use on my Tmobile account i did the jailbreak and also unlocked it. When i try to access the internet it says that that i am not subcribed to a cellular data service but i have the unlimited Data Plan on my BB.

Also for MMS has anyone figured out how to do it. The APN does not show up on my phone. i called A&TT and they said that they should have it by later summer. Is there anyway around that...

[cpjr]

You have to manually input the APN settings into "settings" on the phone in order to get data working. The settings are carrier dependent.