My Italian Sim doesn’t work IN the USA, what are the best phone companies?
You can buy an American sim card, you just need your passport. Each company has its own store, among the most famous are T-Mobile, Verizon, and Sprint.
The companies offer more or less the same services, but it’s good to choose a company that has more coverage like T-Mobile or Verizon.
T-mobile specifically also has an advantageous “international” package. which allows you to call Italian landline and mobile numbers without limitation by paying a fixed monthly rate.