An iPhone thief is wreaking havoc in Queens, police said.

The robber is responsible for stealing eight of the smartphones between Aug. 1 and Sept. 20 in neighborhoods such as Astoria and Hunters Point.

Each time, the thug approached victims from behind and snatched the iPhones from their hands, cops said.

The thief is believed to be around 20 years old and between 6 feet tall and 6-foot-3, with a thin build.