How do you call the US from Ireland?

Answer 1

The telephone country code for the USA is +1. The plus sign means "insert your international access prefix here"; the prefix from Ireland is 00.

Dial:

00 = international prefix

1 = USA

(3-digit area code)

(7-digit number)

Answer 2

You could do it with any phone but unless the phone has a plan for international calling you may end up paying a lot of money depending on how long you stay on the phone. It would be best to make sure that the phone has an international calling plan.