Portugal’s main mobile phone providers are NOS, MEO and Vodafone. If you enable roaming on your mobile, you shouldn’t have any problems in Porto. In general, Portugal has excellent mobile coverage. You can also buy a prepaid SIM card from a local provider, which will give you a local number. If you run out of credit, simply top off the card with more points.
Portugal’s international dialling code is +351. Most mobile numbers begin with a ‘9.’ If you plan on using your phone while driving, you’ll need a hands free set. If you’re caught talking on a regular mobile phone in your car, you’ll have to pay a hefty fine.