Mobile operators in Portugal: how to get a SIM card | Expatica
A Guide to Phone Plans in Portugal - Portugalist
Networks available in Portugal
Homepage - SiPN
Vodafone Prepaid SIM Card for Europe Travel use in 34 European Destinations 19GB Data(Spain 140GB+ Unlimited calls) Free Go Roam in EU for 28 Dyas including France, Italy, Germany,Portugal,Switzerland : Amazon.ca: Electronics
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Vodafone Portugal
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