International telephone calls can be made from almost anywhere in the
Canary Islands. The distinctive blue booths are not easily missed. You
have the choice of using coins, phone cards ( tarjetas telefónicas ) and
sometimes credit cards.
The country code for Gran Canaria is the same as for Spain ( 0034 )
followed by a nine digit number usually starting with 928. Telephone
calls made from bars, restaurants and hotels are usually a great deal
more expensive than the street pay booths.
The cheap rate for international calls is the night tariff from 22.00 to
08.00 hours and all day Sunday.
Now still cheaper
prices- absolute cheapest main net solution in Spain