Double data on these Domestic bundles of Orange Mundo until 31 Aug 2016:
2Gb instead of 1 Gb - 9 euro
4Gb instead of 2 Gb - 15 euro
Links:
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http://www.simmundo.es/layer/carcasa-604.html
-
http://www.simmundo.es/layer/carcasa-605.html
If you go to Spain in the first weeks of September, like me, remember to activate it in the last days of August via the website or the app.