It took a few months for Google to release AT&T-compatible model following the initial release of Nexus One. I was also hoping for another AT&T-compatible model of Nexus S; the one featured on Google Nexus page is compatible with T-Mobile USA, but not AT&T 3G network. I remembered reading that there is an AT&T-compatible Nexus S model. After further searching and reading, I found the Nexus S I’ve been looking for. It is available through Amazon and Negri Electronics.
The AT&T-compatible supports the following radio frequencies: GSM 850, GSM 900, GSM 1800, GSM 1900, 3G 850, 3G 1900 and 3G 2100.
Why AT&T you ask?
I prefer GSM-based phones because I can easily take out the SIM Card from one phone to the other; maintaining only one wireless phone account. Currently, only on AT&T I can use Nexus One, Palm Pre 2 and an iPhone.
I have yet bought the Nexus S.
Model number: I9020A
Comes in Black or White.