If you've been looking for an MVNO that speaks your language,
and that language happens to be Español, then you're in luck.
Dexa is a new GSM-based MVNO that plans to cater to the large
Hispanic demand for prepaid phone service. The best guess for
the actual carrier is Cingular, because Dexa is copying their
marketing speak of "fewest dropped calls." That means there
won't be data available to Dexa customers, just voice service,
since Cingular doesn't provide data to MVNO customers. Right now
Dexa is only available in LA, but with the large Hispanic market
in the US we have a feeling they could be expanding fairly soon.