said by Nightfall:
If so, that is going to be a limiting factor. I know they said it is going to be unlocked, but it would be nice to see what other carriers will allow it.
The new nexus 4 has a pentaband HSPA+ radio, so it will work on any GSM carrier worldwide. In the US that means AT&T, T-mobile, and associated MVNOs. T-mobile will be the only carrier that subsidizes the new nexus, but you can still pop in an AT&T or MVNO SIM since it's unlocked.