How to check compatibility on NEXUS ONE?

[eric56hk]

Is there a way to check if my nexus one is compatible with AT&T 3G without plugging in the sim card???

 

[Kage_]

If the phone is showing a 3G connection then it's compatible. If it's not and your in an area you should be getting 3g then most likely not.

The only way to know for sure is it pop out the battery and look at the FCC number. I think the T-Mob version ends w/ 99100 and the ATT version ends with 99110.