1. Start by dialling "00" or "+" to initiate your international call.
2. Input the country code for your desired destination.
3. Include the area code, excluding the initial 0 (unless calling Italian landlines).
4. Dial the phone number.
5. Press the call button to commence the call.
Please note that when calling North America (USA and Canada) from the UK, you may need to dial "001" or "+1" followed by the area code and phone number.