Mobile Phone Information:-
Normal advice is to set up international roaming before you leave. This allows you to use your UK mobile phone abroad to make and receive calls and messages. You need this service activated on your account so that your mobile works abroad. A week in advance of your departure date, you should contact your UK mobile network provider to ensure your mobile phone is 'enabled' for travel abroad. However Vodaphone PAYG does not appear to need this, and it automatically searches for the local network - Airetel in the case of Spain, likewise for Orange PAYG.