well, I got it working by manually defining the following parameters in a new gprs network connection:
Access Point Name wap.cingular
Username
WAP@CINGULARGPRS.COM
Password CINGULAR1
it works, but then when I go back to CDMA on Sprint, it tries to use this connection.
Is there an autoconfig program that I don't know about? It popped up on my screen when I first started switching between CDMA and GSM, but it hasn't come up again.....
How do I enable "auto-switching?" More importantly, why won't it just get this info from the AT&T SIM card? Why do I have to enter it for it to work now, when I didn't have to a few days ago?