@ peterdoo
This is strange. Because Vodafone doesn't mention 4G on this tariff with one word on its website. It's quite in contrast to their "yu" line on which 4G is heavily marketed.
The announcement of their new tariff late last year didn't mention 4G either. See here for example:
http://ahorro.acierto.com/movil/voda...nutos-15-euros
Last but not least a Google combination of Vodafone Smartphone Internacional and 4G (the term LTE is not so known in Spain) doesn't lead to any hits.
EDIT: This is really Vodafone's biggest secret:
http://www.xatakamovil.com/vodafone/...o-los-consumes
There are very few prepago tariffs open for 4G/LTE and they don't feature it. I don't get it. Thanks for the info.