To dial +1, you first need to find out the country code for the United States. The country code for the United States is 1. Next, you need to find out the area code for the city or region you are calling. The area code for San Francisco is 415. Finally, you need to dial the number with the country code and area code. To call San Francisco from outside of the United States, you would dial 011-1-415-555-1212.