Profile Name = Straight Talk
or NET10, or whatever you want to name it that your phone takes as a valid name. If your phone doesn't let you create new profiles, only modify an existing one, you may not have the option of assigning a new name. APN = att.mvno
In some phones APN might be labeled as Access Point. Proxy = proxy.mvno.tracfone.com
Port = 80
MMSC = http://mmsc.cingular.com
MMS Proxy = proxy.mvno.tracfone.com
If you get errors while trying to send a multimedia message, try 220.127.116.11 instead. Though it's been reported both take you to the same address, some phones react better to the IP addess (numbers) than to the name address. MMS Port = 80
Non-bold text is just for clarification. All other settings not listed here, should be left blank or at their default values. If your phone has an item APN Type or Access Point Type, select Internet,MMS,supl, as many of these as you have available.