In the second half, Lionel Messi made an instant impact after being introduced from the bench, with his incisive pass leading to Lautaro Martinez winning a penalty.
Messi then calmly converted from the spot in the 72nd minute to double Argentina’s lead.
Thiago Almada later completed the scoring in the 86th minute, finishing off a well-worked move involving Messi and Martinez that dismantled Iceland’s defence.