Asegúrate de tener el teléfono en español o cambia el país en donde estás ingresado, a un país donde hablen español.
Si Antonio estuviera en la fiesta, el hablaria con Juan.
This sentence means - If Antonio had gone to the party, he would have talked to Juan.
It is a hypothetical sentence, meaning that it didn't happen but states what could have happened had he decided to go to the party.
