Making phone calls
In every district of Venice you can find public telephone booths; anyway, bars and restaurants usually have a telephone for the public. Phone cards can be bought at tobacconists’, at newspaper kiosks, at post offices and at exchange offices.
To telephone in Italy you must dial the number you want preceded by the city dialling code with zero: for example 041 – dialling code for Venice - and the number 123456.
Instead, to call Italy from abroad, the international code is 00 39 which is followed by the area code and the phone number. For example: 00 39 041 123456.
If you want to telephone from Italy to a foreign country simply dial the code 00 followed by the country code, by the city dialling code – this time it will be 0 – and by the subscriber number. For example 00 33 dialling code for France, and the telephone number without 0. For international calls via operator you must dial the number 170 of Telecom Italia.
You will see many internet points on the streets of Venice, frequented mostly by university students and tourists. The average price to use the Internet is generally six Euros an hour. If you are a resident, worker or student within the Municipality of Venice, you get the free service to connect to the Internet through the city Wi-Fi network. To be able to use it, you must first subscribe to the Cittadinanza digitale website.  Otherwise, through //venice>connected  you can purchase at discounted fees the service for 24, 72 hours or for 7 days.
At the post office you can buy stamps, phone cards, send letters and parcels, send telegrams, faxes, etc. The offices are usually open from 8.30 to 14 from Monday to Friday and from 8.30 to 13 on Saturday and the last day of the month. The offices of the Central Post Office of Rialto and of Piazzale Roma are also open in the afternoon from Monday to Friday.
Inside the post offices you will find two different types of counters, distinguished by different colours: green for the postal services and blue for the postal banking customers services To know which is the nearest post office and to have information on opening hours and services, go to the site of the Italian postal service .
If you want to write a letter or a card to a Venetian, you have to know the post codes (CAP) in Venice. Here they are, listed by district:
30135 Santa Croce
30124 San Marco
30125 San Polo
They are open generally from 8.30 to 13.30, then after an interval of one hour they open again till about 16. Some branches have premises open 24 hours a day where you can use a range of services through cashpoints. All banks are shut on Saturdays, on Sundays and on public holidays. You can change foreign currency even at the post office and exchange offices, in hotels and travel agencies, with a small commission for each exchange transaction.