My unlocked G1 was working with data on one of my ATT lines. I ported that number and so that out of contract line was cancelled. I established a new bring your own equipment line and for activation used a different phone (Nokia 5800) to shield my G1's IMEI from them as I believe the G1 is immune to data sweeps.

My prior sim card was a Cingular branded one. Now I have an ATT one.

Voice works in the G1, but not data.

My APN settings are:

Name: AT&T
APN: wap.cingular
Proxy: leave blank
Port: leave blank
Username:[email protected]
Server: leave blank
MMS Proxy:
MMS Port: 80
APN Type: leave blank

What changes do I need to make to get data working on the new sim for the G1?