NOS Operator Sim card WTF Portugal 

work In European Economic Area (EEA)

Prepaid Sim Card - Simply insert and start using!
With free Data for Social Media apps, 
Minutes and sms for all Portugal Networks And 5GB for Videos Apps

10GB month internet data, 4,99 Week
5GB month internet data , 3,99 Week
1GB month internet data, 2,75 Week

you choose what you prefer.

Apps without eating data like Facebook, Messenger, Instagram, Whatsapp etc.

Promotion: Card is sent activated with 2 months free on the 1GB base plan. 
(10GB data Summer Promo Offer)
you can change your plan at any time

EU UK Roaming Free

*Roaming In the European Economic Area (EEA), which includes the countries of the European Union, Iceland, Liechtenstein and Norway, outgoing voice, sms, mms and video calls are charged according to the tariff in Portugal for other national networks and communications received are free. The consumption of data in roaming in the European Economic Area is subject to a Responsible Use Policy (PUR).