Movistar is a Spanish mobile phone provider and does not operate in Portugal. It would only work if you charge it up with money in Spain and are prepared to paying roamng charges in Portugal.
It probably will be blocked so that it only works with Movistar sim cards.
You may find a shop that will unblock it for a fee or you may be as well to buy a new phone here. You can pick up basic ones from any of the three operators for e 30.00
