Hi, welcome to the forums. I was looking around and found these settings along with the speed rates that they get. They might help:
wap.cingular
WAP@CINGUALRGPRS.COM
CINGULAR1
With the above settings I am getting 110-160kbps
isp.cingular
ISPDA@CINGULARGPRS.COM
CINGULAR1
with the above settings I am getting 20-70 kbps
ISP.CINGULAR
IPS@CINGULARGPRS.COM
CINGULAR1
with thes settings I am getting the same as the second one.
I am trying to figure out what the differences are and what everyone is using and what data rates you are getting.
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You can also try a different browser? What kind of browser are you using?
you might want to try Opera, they offer a 30 day free trial
Opera for Windows Mobile Pocket PC
also to determine your speed try this, it may help
www.dslreports.com/mspeeds