An armed mugger and his accomplice, who acts as a lookout, have been snatching iPhones at gunpoint from victims on the Upper East Side.

The duo first struck Nov. 24 at 10 p.m., ambushing a 47-year-old woman on Madison Avenue near 70th Street.

Two days later, they again hit on Madison Avenue, this time grabbing a phone from a 36-year-old man at 7:10 p.m. near East 74th Street.

On Saturday at 12:05 a.m., they flashed a firearm before fleeing with a phone taken off a 22-year-old woman on East 70th Street near Lexington.

The gunman is Hispanic, approximately 20 years old, 5-10 and 170 pounds. The lookout is also Hispanic, about 17 and 5-7.